Improve changelog readability
Merge remote-tracking branch 'chiiph-github/bug/improve_changelog_readability' into develop
Fold in changes
Merge branch 'release-0.5.1'
Cleanup and pep8 fix.
Add splitted POST sync design docs (#5571).
Split sync in multiple POST requests in server (#5571).
Split sync in multiple POST requests in client (#5571).
Allow for interrupting and recovering sync (#5571).
Add sync status signals (#5517).
fix allow interrupt in target client
Properly raise when couch db does not exist.
Fix tests for new sync process.