all gop widgets (at least ones in vanilla release) have their nlets hidden when displayed inside GOP, as having them is entirely superfluous in that view

fixed image external to conform with the new implementation of @pd_extra (and later other possible sys args) of the file path parser

streamlined @pd_extra parsing for easier integration with other file open calls including externals. Added it to open_via_path

added pdtk_canvas_force_getscroll function to ensure critical getscroll events are executed immediately

optimizations to the scrolling algorithm including erroneous jumps in the scrollbar when pasting/cutting/duplicating things.

streamlined selection logic and added ability for pd to recognize system-wide @pd_extra variable within the path

finished importing the remainder of new K12 module abstractions, updated GUI to reflect them, improved key press capture, reformatted GUI object menu inside K12 mode to allow for more space

reenabled checking of scrollbars after startmotion->click (will need to check for possible regressions)

fixed regression in select due to 37c0cf15 commit which made it behave inconsistently thus making it impossible for floats to be treated as symbols (in cases where first argument was a symbol). Also introduced similar fix to the route object, thus allowing for second inlet to receive either float or symbol