Provide a set of standard icons

[oclero]

Will be https://github.com/oclero/qlementine-icons and used as a submodule of Qlementine.

See https://openapplibrary.org/dev-tutorials/qt-icon-themes

[hunt978]

Personally, Iconfont is recommended for a much more simpler resource structure and bigger icon set. There are plenty of iconfonts for choosing, like fontawsome, material icons, etcs. Here is a reference implementation in Qt.

[oclero]

Use whatever icon set you want.

Anyway, I am working on a full icon set that will fit well with my QStyle.

[oclero]

Release v1.0.0 of Qlementine Icons has been made.

Now it needs to be added as submodule.