Add a removals template and example yml

Reformat all removals yml to match expected format

Add removal_milestone to historic removals

Update tooling naming to reflect hierarchy

Compile deprecations and removals

Deprecation announcements in announced milestone

Updating CI job to ensure deps/rems are in sync

Combine the check_* rake tasks to reduce pipeline time

Indicate that removal is Milestone

Use **/* to check all files and subdirs

This file needed to be updated; it's causing a test to fail. I can't
guarantee it'll fix all of the pipeline failures but it'll fix
this one.

Add deprecations and removals to named folders with version subdir

Compile Deprecations with 14.6 updates

Add spec to deprecation handling