Previous code accepted the "first" hit in a theme - particularly, if a
module is called "A" and a *different* module "B" uses "A" as state, a
widget of module B with state A would be themed as *module* A, wrongly.
Essentially, made sure that the last (most specific) themeing "wins".
fixes#647
a module can now set `self.background = True` in its `__init__()` method
to make sure its update method is invoked in a separate thread.
also, do a PoC implementation of this for the github module.
TODO: add this to dev doc
see #640
the "merge" algorithm only fills in missing elements - i.e. the most
important pieces of a data structure must be filled in first. since the
iconset specified on the CLI takes precedence over anything present in
the config, load the CLI-provided iconset *first*.
hopefully fixes#634
when scrolling text that is subject to *slight* changes (e.g. a song
that contains the current position within the song), allow for slight
variations in the displayed text.
fixes#629
OK - so I have to admit I *hate* the fact that PIP seems to require a
subdirectory named like the library.
But since the PIP package is something really nifty to have (thanks to
@tony again!!!), I updated the codebase to hopefully conform with what
PIP expects. Testruns so far look promising...
