This also specifies what exactly getContext*() functions do. Before this
commit linesCount was sometimes interpreted as exclusive of current
line, which was confusing as linesCount + 1 lines were being returned.
Currently the current line is duplicated in both "before" and "after"
context. This is due to DocumentContextReader::readWholeFileAfter()
picking the current line part of which has been already included into
the "before" context.
This makes it possible to write simple unit tests for it without running
full Qt Creator. Not coupling DocumentContextReader to
TextEditor::TextDocument unnecessarily is also a better design in
general.
* feat: Add attachments for message
* feat: Support QtC color palette for chat view
* feat: Improve code completion from non-FIM models
* refactor: Removed trimming messages
* chore: Bump version to 0.4.4
