New features
[7e266a4] Remove the "leave empty" option for date/time fields (@javiereguiluz)
[89deeae] Improve performance of the configurator applied to all fields (@javiereguiluz)
[24165da] Add setEmptyData method to FieldTrait (@a-r-m-i-n)
[f210bd1][cfad855] Enable locale switching from dashboard (@Lustmored)
[fa70d4a] Merge all options under a new settings menu (@javiereguiluz)
[f8ed33d] Add Slovak translation (@Matej-ch)
Bug fixes
[fe06f95] Fix grouped choices in ChoiceFields (@michaelKaefer)
[0985e1b] Fix some issues related to icons (@javiereguiluz)
[6d5e505] Add docs for global actions (@michaelKaefer)
[f6250d9] Fix typehint for FieldInterface::new(..., $label) (@Lustmored)
[5c3690f] Fix styles for readonly properties (@InformatiqueProg)
[9de9ffe] Fix keeping existing formatted value (@haase-fabian)
[1af87e2][9d20b2b] Misc. doc fixes (@alzee, @Bersman)