final
Generate_composition will be called on changes in the options to
generate the entire composition. Right now, only the left hand can be
generated
modification of place of doc, modification of utils function
choose progression
Merge branch 'master' of https://github.com/julienR2/BluesMyMind.git

Conflicts:
	doc/left_hand_patterns.docx
	test_src/generate_blues_scale.py