Bump to Version 2.0.0-RC62.0.0-RC6

- Update Changelog.
- Move Changelog to dedicated file.
- Restructure / reframe specification.

4 files changed, 173 insertions, 154 deletions

diff --git a/docs/changelog.md b/docs/changelog.md
new file mode 100644
index 0000000..d5d1dcd
--- /dev/null
+++ b/docs/changelog.md
@@ -0,0 +1,161 @@
+# MOA ZS - Changelog
+
+This document summarizes changes between MOA ZS Releases that were made in the MOA ZS codebase and in the app2mzs interfaces.
+For a non-normative summary of changes that were made in the ZUSE specifications (and therefore affect MOA ZS directly and a sender application indirectly), the reader is referred to [ZUSE Specification Changelog](zusespec-changelog.md).
+
+## Changes MOA ZS 2.0.0 RC6
+
+- Bug Fix: Finalize the removal of the "JAXB Class Not Found Exception" workaround from 2.0.0-RC3.
+- Bug Fix: Comply with zuse specifications when creating TNVZ / MSG / App Clients (e.g. disable "Store Binary Response" for TNVZ Client and App Client, Disable MTOM for TNVZ Client).
+- Refactor: Replace `createSoap1{1,2}` with `create{Tnvz,App,Msg}Client`.
+- Change Behavior: In case where MOA ZS receives a notification or request status with a unknown `AppDeliveryID`, MOA ZS issues a warning.
+  Then, MOA ZS falls back to the default configuration for figuring out on how to handle the notification.
+  Before, MOA ZS would cancel the process if the `AppDeliveryID` was unknown.
+- Bug Fix: Fix NullPointerException when `mzs:DeliveryRequest/Receiver` is identified via `p:IdentificationType`.
+- Add `msg:ClearingProfilID` in mzs2msg conversion.
+
+## Changes MOA ZS 2.0.0 RC5
+
+- Bug Fix; Problem: With `perform-query-person-request` activated, MOA ZS generated a `msg:DeliveryRequest` that did not comply with the [msg] schema. Solution: Make response compliant.
+
+## Changes MOA ZS 2.0.0 RC4
+
+- Bug Fix: Ensure that [tnvz] QueryPersonRequest/Sender marshalls correctly (to prevent error 400).
+
+## Changes MOA ZS 2.0.0 RC3
+
+- Remove Workaround that fixes JAXB Class Not Found Exception when running application in Tomcat.
+- Bump zusetnvz contracts from version 2.2.006 to 2.2.008.
+
+## Changes MOA ZS 2.0.0 RC2
+
+- Minor Fixes in Documentation and Readme.
+- Change MOA ZS Group ID from `at.gv.zustellung` to `at.gv.egiz`.
+- Bug Fix: Booleans in [application.yaml](../src/test/resources/config/application.yaml) are parsed correctly.
+- Bug Fix: [zusemsg] and [zusetnvz] clients use SOAP 1.2 to comply with the specification.
+- Bug Fix: Change `type` property key to `filetype` in [application.yaml](../src/test/resources/config/application.yaml) such that MOA ZS receives the property value.
+- Bug Fix: Validation error was assigned to TNVZ Client, but appeared in MSG Client.
+- Upgrade [zusemsg] schema files from 2.0.0 to 2.0.007 and apply changes to codebase.
+- Upgrade [zusetnvz] from 2.0.0 to 2.0.006 and apply changes to codebase.
+- Add licenses, license headers and NOTICE.
+- Add @author tags.
+
+### app2mzs interface changes
+
+- Switch namespace of `AustrianAdressesOnly` from [tnvz] to [msg].
+- Add new optional element `ClearingProfilID` to `mzs:DeliveryRequestType/Sender`;
+  Reason: Element was added to [zusemsg] 2.2.007.
+- Add new choice in `mzs:DeliveryNotification` to forward new answer of type `msg:ERVConfirmedDelivery` to the app.
+- Move element `msg:RelayedViaERV` from `SuccessType` into `MessageType` (so that it's available to all types that derive from `MessageType`).
+- Change `mzs:MessageType/ZSDeliveryID` from mandatory to optional element.
+  Reason: In certain cases the `ZSDeliveryID` does not exist.
+  Example: Perform QueryPersonRequest, Request fails, no ZSDeliveryID because request was never sent to delivery service.
+- Change type of `mzs:Error/Code` from `xs:integer` to `xs:string`. Reason: `msg:Code` is also of type `xs:string`.
+
+## Changes Between MOA ZS 1.5.3 and MOA ZS 2.0.0 RC1
+
+For version 2.0.0, MOA ZS was rewritten from scratch. The following list summarizes the changes:
+
+- Add compatibility with [zusemsg].
+- Add compatibility with [zusetnvz].
+- Replace the database as persistent storage with an in-memory cache.
+- Update the app2mzs WSDL contract and its data types to fit the needs of [zusemsg] and [zusetnvz].
+- Integrate signature verification with MOA SP-SS.
+- Drop support for message encryption and signature creation.
+- Target Platform Java 12.
+
+### Changes between app2mzs 1.5.3 and app2mzs 2.0.0
+
+This section describes how the app2mzs WSDL contract was changed and explains why these changes were applied.
+The changes in the app2mzs WSDL contract accommodate feature additions and feature removals in [zusemsg] 2.0.0 and [zusetnvz] 2.0.0.
+Not all changes are backward compatible and require adjustments in app2mzs-1.5.3-compatible clients.
+
+### Changes in `mzs:DeliveryRequest`
+
+- The `Server` element was removed from the `DeliveryRequest` type.
+  In MOA ZS 1.5.3, this element replaced the ZKOPF response.
+  ZKOPF request and response do not exist anymore, which renders the `Server` response irrelevant.
+  This change is *not backward compatible*.
+- The `ProfileID` option in the `DeliveryRequest/Sender` element was replaced by `msg:SenderProfile` because sender profiles are now registered at the delivery service and referred to via `DeliveryRequest/Sender/SenderProfile`.
+  This change is *not backward compatible*.
+- The `SignatureKeyID` element was removed from `DeliveryRequest` because this element refers to the signing key.
+  Since signature creation was dropped from MOA ZS, the element is not relevant.
+  This change is *not backward compatible*.
+- The optional elements `msg:Logo` and `msg:AdditionalCriteria` were added to `DeliveryRequest/Sender` because they were also added as optional elements to [zusemsg].
+  This change is *backward compatible*.
+- The element `Person` in `DeliveryRequest/Sender` was replaced by the `p:CorporateBody` profile because that is the only sender that is allowed by [zusemsg].
+  This change is *not backward compatible*.
+- `DeliveryRequest/Sender/Address` was removed because the element was dropped in [zusemsg].
+  This change is *not backward compatible*.
+- An alternative choice to the `Person`-`Address` sequence in `DeliveryRequest/Receiver` was added.
+  This choice allows to pass a `p:Identification` element instead of the `Person`-`Address` sequence.
+  The choice was added to enable the optional feature in [zusemsg].
+  This change is *backward compatible*.
+- The optional element `tnvz:AustrianAddressesOnly` was added to `DeliveryRequest/Receiver` because this element was also added as an optional element to [zusetnvz].
+  This change is *backward compatible*.
+- The optional element `msg:AdditionalCriteria` and `msg:PreAdviceNote` were added to `DeliveryRequest/Receiver` because these element were also added as optional elements to [zusemsg].
+  This change is *backward compatible*.
+- The element `MetaData` in `DeliveryRequest` was replaced with the `msg:MetaData` element from [zusemsg].
+  The reason for replacing the `MetaData` element is that the `MetaData` from the app2mzs contract represents the same data that the delivery service expects.
+  Furthermore, the amount of changes between MetaData from app2mzs 1.5.3 and [zusemsg] 2.0.0 prohibits a straight forward conversion between both elements.
+  This change is *not backward compatible*.
+- The optional `Config` element was added to the `DeliveryRequest` element.
+  This element allows overriding individual configuration parameters for the ongoing request.
+  This change is *backward compatible*: You do not need to specify any parameters in the `Config`-element since you can also configure delivery requests in [application.yaml](../src/test/resources/config/application.yaml).
+  See [Chapter Configuration](#configuration) for more details.
+
+- The element `XMLDocument` was replaced as this element was dropped from [zusemsg] in favor of the `msg:Payload` element.
+  This change is *not backward compatible*.
+- The types `BinaryDocument` and `DocumentReference` in `DeliveryRequest/Payload` were merged to remove duplicated element. Merging these elements ensures that both payload types contain all of `msg:Attachment`s mandatory fields.
+  This change is *not backward compatible*.
+- The element `MD5Checksum` in `DeliveryRequest/Payload/DocumentReference` was replaced with `msg:Checksum`, which was introduced by [zusemsg].
+  This change is *not backward compatible*.
+- The element `msg:Size` was added to `DeliveryRequest/Payload` because it was also added as a mandatory element in [zusemsg]. This change is not *backward compatible*.
+- The `sync` attribute was dropped in favor of the element `Config/ServiceTimeout`.
+  This change is *not backward compatible*.
+
+### Changes in `mzs:DeliveryResponse`
+
+- The option `DeliveryConfirmation` in `DeliveryResponse` was dropped because it was dropped in [zusemsg].
+  This change is *not backwards-compatible*.
+- Add `DeliverySystem`, `ZSDeliveryID` and `GZ` to `MessageType`, which is the base type of `DeliveryResponse/Success`, -`PartialSuccess`, and -`Error`.
+  These mandatory elements were added to [zusemsg].
+  This change is *backwards-compatible*.
+- Add `SignedDeliveryRequestStatus` to` MessageType`.
+  This optional element contains the original, unaltered response that was sent from the delivery service to MOA ZS.
+  The app can use this response to verify the contained signature.
+  This change is *backward compatible*.
+- Remove `MZSDeliveryID` because this ID does not exist anymore.
+  This change is *not backward compatible*.
+- Add the optional `PreadviceNoteSent` element to `ErrorType` because it was added in [zusemsg].
+  This change is *backward compatible*.
+- Remove `DocumentReference` from `ErrorType` because it was removed from [zusemsg].
+  This change is *not backward compatible*.
+- Add the elements `msg:DeliveryTimestamp` and `msg:RelayedViaERV` to `SuccessType` because they were added in [zusemsg].
+  This change is *backward compatible*.
+
+### Changes in `mzs:DeliveryNotification`
+
+- Remove `DeliveryConfirmation` and `DeliveryStatement` elements from `DeliveryNotification` as those element were dropped from [zusemsg].
+  This change is *not backward compatible*.
+- Add the elements `msg:SenderDetails`, `msg:ReceiverDetails`, `msg:User`, `AdditionalFormat` and `msg:NotificationsPerformed` to the `DeliveryNotification` because they were added to [zusemsg].
+  This change is *backward compatible*.
+
+### Changes in `mzs_mypersondata`
+
+- The element `AbstractPersonType` was defined as `abstract`, since the equivalent type in [zusemsg] is abstract as well.
+  This change is *not backward compatible*.
+- The elements `Name` and `DateOfBirth` in `PhysicalPersonType` were set from optional to mandatory because they are mandatory in [zusemsg].
+  This change is *not backward compatible*.
+- The optional element `Affix` was added to `PersonNameType` since this element was added to [zusemsg] as well.
+  This change is *backward compatible*.
+- The `CorporateBodyType` was extended by the optional `Target` element that was added to [zusemsg].
+  This change is *backward compatible*.
+- The elements `FullName` and `Organization` in `CorporateBodyType` were set from optional to mandatory because they are compulsory in [zusemsg].
+  This change is *not backward compatible*.
+- The restriction from `CountryCode` was lifted.
+  This change is *backward compatible*.
+- The optional attribute `type` was added to `PostalAddressType`.
+  This change is *backward compatible*.
+- The optional attribute `MessengerService` was added to `TelephoneAddressType`.
+  This change is *backward compatible*.
diff --git a/docs/spec.md b/docs/spec.md
index 0bdce6f..b4e2f3e 100644
--- a/docs/spec.md
+++ b/docs/spec.md
@@ -1,5 +1,7 @@
 # MOA ZS - Specification
 
+This document gives an overview on what MOA ZS does, on how it can be configured and on which input- and output data MOA ZS processes.
+
 ## Introduction
 
 MOA ZS is a web application middleware that allows a sender application (app) to send delivery requests to delivery services.
@@ -24,157 +26,6 @@ The following figure shows, with which electronic delivery participants MOA ZS c
 
 MOA ZS uses Apache CXF as a web service framework and the Spring Framework as inversion of control container. The application is written in Java and requires JDK 12 as runtime environment.
 
-## Changelog
-
-This section summarizes changes between MOA ZS Releases that were made in the MOA ZS codebase and in the app2mzs interfaces.
-For a non-normative summary of changes that were made in the ZUSE specifications (and therefore affect MOA ZS directly and a sender application indirectly), the reader is referred to [ZUSE Specification Changelog](zusespec-changelog.md).
-
-### Changes MOA ZS 2.0.0 RC5
-
-- Bug Fix; Problem: With `perform-query-person-request` activated, MOA ZS generated a `msg:DeliveryRequest` that did not comply with the [msg] schema. Solution: Make response compliant.
-
-### Changes MOA ZS 2.0.0 RC4
-
-- Bug Fix: Ensure that [tnvz] QueryPersonRequest/Sender marshalls correctly (to prevents error 400).
-
-### Changes MOA ZS 2.0.0 RC3
-
-- Remove Workaround that fixes JAXB Class Not Found Exception when running application in Tomcat.
-- Bump zusetnvz contracts from version 2.2.006 to 2.2.008.
-
-### Changes MOA ZS 2.0.0 RC2
-
-- Minor Fixes in Documentation and Readme.
-- Change MOA ZS Group ID from `at.gv.zustellung` to `at.gv.egiz`.
-- Bug Fix: Booleans in [application.yaml](../src/test/resources/config/application.yaml) are parsed correctly.
-- Bug Fix: [zusemsg] and [zusetnvz] clients use SOAP 1.2 to comply with the specification.
-- Bug Fix: Change `type` property key to `filetype` in [application.yaml](../src/test/resources/config/application.yaml) such that MOA ZS receives the property value.
-- Bug Fix: Validation error was assigned to TNVZ Client, but appeared in MSG Client.
-- Upgrade [zusemsg] schema files from 2.0.0 to 2.0.007 and apply changes to codebase.
-- Upgrade [zusetnvz] from 2.0.0 to 2.0.006 and apply changes to codebase.
-- Add licenses, license headers and NOTICE.
-- Add @author tags.
-
-#### app2mzs interface changes
-
-- Switch namespace of `AustrianAdressesOnly` from [tnvz] to [msg].
-- Add new optional element `ClearingProfilID` to `mzs:DeliveryRequestType/Sender`;
-  Reason: Element was added to [zusemsg] 2.2.007.
-- Add new choice in `mzs:DeliveryNotification` to forward new answer of type `msg:ERVConfirmedDelivery` to the app.
-- Move element `msg:RelayedViaERV` from `SuccessType` into `MessageType` (so that it's available to all types that derive from `MessageType`).
-- Change `mzs:MessageType/ZSDeliveryID` from mandatory to optional element.
-  Reason: In certain cases the `ZSDeliveryID` does not exist.
-  Example: Perform QueryPersonRequest, Request fails, no ZSDeliveryID because request was never sent to delivery service.
-- Change type of `mzs:Error/Code` from `xs:integer` to `xs:string`. Reason: `msg:Code` is also of type `xs:string`.
-
-### Changes Between MOA ZS 1.5.3 and MOA ZS 2.0.0 RC1
-
-For version 2.0.0, MOA ZS was rewritten from scratch. The following list summarizes the changes:
-
-- Add compatibility with [zusemsg].
-- Add compatibility with [zusetnvz].
-- Replace the database as persistent storage with an in-memory cache.
-- Update the app2mzs WSDL contract and its data types to fit the needs of [zusemsg] and [zusetnvz].
-- Integrate signature verification with MOA SP-SS.
-- Drop support for message encryption and signature creation.
-- Target Platform Java 12.
-
-### Changes between app2mzs 1.5.3 and app2mzs 2.0.0
-
-This section describes how the app2mzs WSDL contract was changed and explains why these changes were applied.
-The changes in the app2mzs WSDL contract accommodate feature additions and feature removals in [zusemsg] 2.0.0 and [zusetnvz] 2.0.0.
-Not all changes are backward compatible and require adjustments in app2mzs-1.5.3-compatible clients.
-
-#### Changes in `mzs:DeliveryRequest`
-
-- The `Server` element was removed from the `DeliveryRequest` type.
-  In MOA ZS 1.5.3, this element replaced the ZKOPF response.
-  ZKOPF request and response do not exist anymore, which renders the `Server` response irrelevant.
-  This change is *not backward compatible*.
-- The `ProfileID` option in the `DeliveryRequest/Sender` element was replaced by `msg:SenderProfile` because sender profiles are now registered at the delivery service and referred to via `DeliveryRequest/Sender/SenderProfile`.
-  This change is *not backward compatible*.
-- The `SignatureKeyID` element was removed from `DeliveryRequest` because this element refers to the signing key.
-  Since signature creation was dropped from MOA ZS, the element is not relevant.
-  This change is *not backward compatible*.
-- The optional elements `msg:Logo` and `msg:AdditionalCriteria` were added to `DeliveryRequest/Sender` because they were also added as optional elements to [zusemsg].
-  This change is *backward compatible*.
-- The element `Person` in `DeliveryRequest/Sender` was replaced by the `p:CorporateBody` profile because that is the only sender that is allowed by [zusemsg].
-  This change is *not backward compatible*.
-- `DeliveryRequest/Sender/Address` was removed because the element was dropped in [zusemsg].
-  This change is *not backward compatible*.
-- An alternative choice to the `Person`-`Address` sequence in `DeliveryRequest/Receiver` was added.
-  This choice allows to pass a `p:Identification` element instead of the `Person`-`Address` sequence.
-  The choice was added to enable the optional feature in [zusemsg].
-  This change is *backward compatible*.
-- The optional element `tnvz:AustrianAddressesOnly` was added to `DeliveryRequest/Receiver` because this element was also added as an optional element to [zusetnvz].
-  This change is *backward compatible*.
-- The optional element `msg:AdditionalCriteria` and `msg:PreAdviceNote` were added to `DeliveryRequest/Receiver` because these element were also added as optional elements to [zusemsg].
-  This change is *backward compatible*.
-- The element `MetaData` in `DeliveryRequest` was replaced with the `msg:MetaData` element from [zusemsg].
-  The reason for replacing the `MetaData` element is that the `MetaData` from the app2mzs contract represents the same data that the delivery service expects.
-  Furthermore, the amount of changes between MetaData from app2mzs 1.5.3 and [zusemsg] 2.0.0 prohibits a straight forward conversion between both elements.
-  This change is *not backward compatible*.
-- The optional `Config` element was added to the `DeliveryRequest` element.
-  This element allows overriding individual configuration parameters for the ongoing request.
-  This change is *backward compatible*: You do not need to specify any parameters in the `Config`-element since you can also configure delivery requests in [application.yaml](../src/test/resources/config/application.yaml).
-  See [Chapter Configuration](#configuration) for more details.
-
-- The element `XMLDocument` was replaced as this element was dropped from [zusemsg] in favor of the `msg:Payload` element.
-  This change is *not backward compatible*.
-- The types `BinaryDocument` and `DocumentReference` in `DeliveryRequest/Payload` were merged to remove duplicated element. Merging these elements ensures that both payload types contain all of `msg:Attachment`s mandatory fields.
-  This change is *not backward compatible*.
-- The element `MD5Checksum` in `DeliveryRequest/Payload/DocumentReference` was replaced with `msg:Checksum`, which was introduced by [zusemsg].
-  This change is *not backward compatible*.
-- The element `msg:Size` was added to `DeliveryRequest/Payload` because it was also added as a mandatory element in [zusemsg]. This change is not *backward compatible*.
-- The `sync` attribute was dropped in favor of the element `Config/ServiceTimeout`.
-  This change is *not backward compatible*.
-
-### Changes in `mzs:DeliveryResponse`
-
-- The option `DeliveryConfirmation` in `DeliveryResponse` was dropped because it was dropped in [zusemsg].
-  This change is *not backwards-compatible*.
-- Add `DeliverySystem`, `ZSDeliveryID` and `GZ` to `MessageType`, which is the base type of `DeliveryResponse/Success`, -`PartialSuccess`, and -`Error`.
-  These mandatory elements were added to [zusemsg].
-  This change is *backwards-compatible*.
-- Add `SignedDeliveryRequestStatus` to` MessageType`.
-  This optional element contains the original, unaltered response that was sent from the delivery service to MOA ZS.
-  The app can use this response to verify the contained signature.
-  This change is *backward compatible*.
-- Remove `MZSDeliveryID` because this ID does not exist anymore.
-  This change is *not backward compatible*.
-- Add the optional `PreadviceNoteSent` element to `ErrorType` because it was added in [zusemsg].
-  This change is *backward compatible*.
-- Remove `DocumentReference` from `ErrorType` because it was removed from [zusemsg].
-  This change is *not backward compatible*.
-- Add the elements `msg:DeliveryTimestamp` and `msg:RelayedViaERV` to `SuccessType` because they were added in [zusemsg].
-  This change is *backward compatible*.
-
-### Changes in `mzs:DeliveryNotification`
-
-- Remove `DeliveryConfirmation` and `DeliveryStatement` elements from `DeliveryNotification` as those element were dropped from [zusemsg].
-  This change is *not backward compatible*.
-- Add the elements `msg:SenderDetails`, `msg:ReceiverDetails`, `msg:User`, `AdditionalFormat` and `msg:NotificationsPerformed` to the `DeliveryNotification` because they were added to [zusemsg].
-  This change is *backward compatible*.
-
-### Changes in `mzs_mypersondata`
-
-- The element `AbstractPersonType` was defined as `abstract`, since the equivalent type in [zusemsg] is abstract as well.
-  This change is *not backward compatible*.
-- The elements `Name` and `DateOfBirth` in `PhysicalPersonType` were set from optional to mandatory because they are mandatory in [zusemsg].
-  This change is *not backward compatible*.
-- The optional element `Affix` was added to `PersonNameType` since this element was added to [zusemsg] as well.
-  This change is *backward compatible*.
-- The `CorporateBodyType` was extended by the optional `Target` element that was added to [zusemsg].
-  This change is *backward compatible*.
-- The elements `FullName` and `Organization` in `CorporateBodyType` were set from optional to mandatory because they are compulsory in [zusemsg].
-  This change is *not backward compatible*.
-- The restriction from `CountryCode` was lifted.
-  This change is *backward compatible*.
-- The optional attribute `type` was added to `PostalAddressType`.
-  This change is *backward compatible*.
-- The optional attribute `MessengerService` was added to `TelephoneAddressType`.
-  This change is *backward compatible*.
-
 ## Configuration
 
 The folder `src/test/resources/config` serves as a template for configuring MOA ZS.
@@ -269,7 +120,13 @@ You may specify if MOA ZS should log events to a file appender via the `logging.
 You can specify the logging format in `logback.xml`.
 See [Spring Boot Documentation: Logging](https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html) for further details.
 
-## Namespace Declarations
+## MOA ZS Service Documentation
+
+MOA ZS implements two services: the [app2mzs.wsdl](https://git.egiz.gv.at/moa-zs/tree/src/main/resources/mzs/app2mzs.wsdl) service, which accepts delivery requests from a sender, and the [zuse2app_p2.wsdl](https://git.egiz.gv.at/moa-zs/tree/src/main/resources/zusemsg/zuse2app_p2.wsdl) service, which accepts notifications and request status updates from a delivery service.
+The file [app2mzs.xsd](https://git.egiz.gv.at/moa-zs/tree/src/main/resources/mzs/app2mzs.xsd) documents the data structure and the parameters of the [app2mzs.wsdl](https://git.egiz.gv.at/moa-zs/tree/src/main/resources/mzs/app2mzs.wsdl) service.
+In order to get a complete overview, you might also review related schema files in the [resources folder](https://git.egiz.gv.at/moa-zs/tree/src/main/resources/).
+
+### Namespaces
 
 MOA ZS and its documentation map the following acronyms to the following namespaces:
 
diff --git a/pom.xml b/pom.xml
index 756d431..001e2b8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>at.gv.egiz</groupId>
   <artifactId>moa-zs</artifactId>
-  <version>2.0.0-RC6-SNAPSHOT</version>
+  <version>2.0.0-RC6</version>
   <packaging>war</packaging>
 
   <name>Moa ZS</name>
diff --git a/readme.md b/readme.md
index 47852b0..c446576 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,8 @@
 # MOA ZS - README
 
-This file gives instructions on how to build, test, and deploy MOA ZS.
+This document gives instructions on how to build, test, and deploy MOA ZS.
 See [the technical specification](docs/spec.md) for a more detailed description of MOA ZS and how it can be configured.
+For changes between release versions (and especially between MOA ZS v1 and MOA ZS v2), see [the changelog](docs/changelog.md).
 
 ## Build Instructions