added setProperty()

for modifying any named property
changeFOO -> setFOO
Merge branch 'master' of github.com:iem-projects/striem

Conflicts:
	core/streamer.py
added textoverlay and proper sizes
no "continue" without a loop
changeGOO -> setGOO transition
setting font
fix reading of multi-line pipeline.ctl
mark font.composer as settable
print windowIDs as hex

for easier debugging of Xerrors
temporary disable ignoring of closeEvents
(temporarily) disable controllable

it's not working anyhow, and it's unclear what this does (should do) with text
allowing to set composer text/pos
move starting of pipeline to main app

does it make the live pipeline appear on the live-screen? NO
set fontPos/text
store reference to streamer, so we can control it
callbacks for changing text
enable text-change callbacks