update release notes and changelog

Author: adorton-adobe

.changelog/changelog.md

@@ -1,3 +1,42 @@
+| tag | date | title |
+|---|---|---|
+| v2.7.0rc4 | 2021-11-18 | User Sync Tool v2.7.0rc4 |
+
+# New Features
+
+**Revamped Sign Sync**
+
+Sign Sync has been overhauled. It is now implemented as a separate workflow with an alternate entrypoint command (`sign-sync`).
+
+Feature summary
+
+- Primary config for Sign Sync is `sign-sync-config.yml`
+- Sign connector config - `connector-sign.yml`
+- All identity sources are supported
+- Sync supports multiple Sign targets
+- Full user lifecycle management for standalone Sign environments
+- Mapping structure to manage Sign group assignments and admin privileges
+- Same logging options as UMAPI sync
+- Sign API data is cached
+- Tool to migrate post-sync config
+
+Architecture changes
+
+- New `engine` module
+- `rules.py` refactored to `engine.umapi`
+- `config.py` refctored to multi-file module
+- Sign API client is top-level (parallel to `user_sync` module)
+- `post_sync` has been removed
+
+Notes:
+
+- User multi-group (UMG) is not supported at this time
+- The Sign client uses Sign API v6
+
+Documentation here - https://github.com/adobe-apiplatform/user-sync.py/blob/v2-sign-phase-2/docs/en/user-manual/sign_sync.md
+
+---
+
 | tag | date | title |
 |---|---|---|
 | v2.7.0rc3 | 2021-11-08 | User Sync Tool v2.7.0rc3 |

.changelog/latest.md

@@ -14,6 +14,7 @@ Feature summary
 - Mapping structure to manage Sign group assignments and admin privileges
 - Same logging options as UMAPI sync
 - Sign API data is cached
+- Tool to migrate post-sync config
 
 Architecture changes