Bump version to 3.0.0-alpha.4

Bump version to v3.0.0-alpha.3

Bump version to 3.0.0-alpha.2

Store other people's exercises separately

Bump version to v2.4.1

Bump version to v2.4.0

Update the CHANGELOG profile entries

Bump version to v2.2.6

Bump version to 2.2.5

Bump version to 2.2.4