fix bug; os.makedirs() may have failed

fix bugs

Delete varrename.gif

Delete lvars.gif

Update README.md

add individual filter configs; move experimental filters

Update README.md

Delete ctopy.py

annotate code, change config path, add dbg_print

improve performance

Update hierarchy.py

Update hierarchy.py

Add files via upload

add support for hint and popup events

Update item_sync.py