Merge branch 'hotfix/2.3.1'
Merge branch 'release/2.3.2'
Merge branch 'release/2.3.3'
Merge branch 'release/2.3.4'
Merge branch 'release/2.4.0'
Adding pdo_sqlite to required modules in dev

Might be stupid but when I tested the app, I didn't think about in my clean environment, which drove me to weird bugs.
Merge branch 'develop' of github.com:authbucket/oauth2-php into develop