Added modeline to set foldmethod=marker for this file.
Applied single-level folding across file.
Folded license too.
Shifted bg colour and low colour settings into configuration section.
2nd level folds for functions and lang-specific highlighting.
Removed extra set background statement.
Simple support for transparent background.
Added transparent background to NonText elements.
Merge branch 'feature/folding' into dev
Merge branch 'feature/transparentbg' into dev