All contributions are very welcome, not just code-related contributions!
Code style is different in lib/ application logic and src/ UI logic. lib/ tries to follow a style common with the standard library, see lib/style_guide.md for more details, while src/ tries to follow a style common with Qt.
To better scope different parts of the UI, most classes are scoped to their respective directories,
following a similar naming scheme, except starting with an upper-case letter. For example,
all classes in the dialog/ should be in a Dialog namespace. The only exception to this is
classes in the util/, view/ and widget/ folders. If those folders contain sub-folders
however, the namespace should reflect the name of the sub-folder.