ShaderState: Reduce hash-map utilization at shader switch (reset uniforms/attributes); Refine API doc.
Merge remote-tracking branch 'xranby/NEWT-input'
README: Add new IRC channel, mark Jabber deprecated
README: Add new IRC channel, mark Jabber deprecated
Add LinuxEventDeviceTracker used by RaspPi newt/driver/bcm/vc/iv/WindowDriver

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>