Merge pull request bolt#7035 from bolt/release/3.2.20

Updating changelog, prepare for Bolt 3.2.20 release.

Merge pull request bolt#7023 from bolt/hotfix/prepare-3.3.5-release

Updating Changelog.md and Version.php for 3.3.5

Merge pull request bolt#6997 from bolt/hotfix/prepare-3.3.4-release

[WIP] Preparing Bolt 3.3.4 release.

Merge pull request bolt#6947 from bolt/hotfix/prepare-3.3.3-release

Updating changelog.md, Version.php. Preparing Bolt 3.3.3 release.

Ninja-inserting the correct date in changelog.

- Change: Prevent install of PHP 7.2. Support for PHP 7.2 will land i…

…n 3.4

- Change: Better handling & reporting of extension page failures bolt#6883
- Fixed: Incorrect formatting of dates & times according to locale bolt#6907
- Fixed: Restore support for sorting in ContentType Selects bolt#6878
- Fixed: Show singular name instead of ContentType slug bolt#6876
- Fixed: Template tab always showing when enabled on only one ContentType bolt#6869
- Fixed: Timed records not being published/unpublished bolt#6906
- Tests: Check correct sorting gets applied bolt#6879
- Update: Re-generate translation files bolt#6889
- Update: Update requirement of bolt/collection to v1.1 bolt#6885