WIP: 2.11.0-RC1 relates notes: breaking changes and deprecations

Will make a more comprehensive pass next week.
wip
more wip
Deprecations etc
Update hand-written.md
Merge pull request #1 from xeno-by/patch-1

Update hand-written.md
final draft...
Merge pull request #50 from adriaanm/master

WIP: 2.11.0-RC1 relates notes: breaking changes and deprecations