Prepare v0.4.0 (ManimCommunity#1072)

Prepare to release v0.4.0

v0.3.0: prepare new release (ManimCommunity#986)

* bump version number

* add formatted changelog

* Capitalization of changelog entries

Co-authored-by: KingWampy <[email protected]>

* bump version to 0.3.0

* include 988 in changelog

Co-authored-by: KingWampy <[email protected]>

Release v0.2.0 (ManimCommunity#897)

Changes since v0.1.1.

Version 0.1.1 changes

Merge pull request ManimCommunity#584 from ManimCommunity/update-vers…

…ion-number

Update version number to 0.1.0