modify existing shapes
- refactor: separate append from modify d413ca1
- feature: insert and edit a single chart c1fc962
- test: one output file per test 7866c70
- feature: generic shapes; refactor: subdirs for shapes 60b6f1e
- Delete myPresentation.pptx 9c35dc6
- test: slide notes and images 8a81a51
- refactor: definitions and constants; fix: svg single import 2ce41b4
- test: customer related dir c6a0a25
- fix: adding svg images; feature: duration a8f8565