Merge branch 'hotfix/fix_image_path'
Merge branch 'release/0.9.1'
suport close diagram all
format space
add create class diagram command and introduce InvalidState and move states to public
add moreunit
extract string and add test
add create usecase diagram command
add test
add create statemachine diagram
add test
add create sequence diagram command
add command
Merge branch 'feature/improve_command' into develop