Add missing ack-configure message

README clarifications

Include sys/time.h in screenhackI.h

Wait for compositor if no surfaces redrawable

Avoid unnecessary roundtrip messages

Control frame redraw frequency explicitly

With eglSwapInterval(1), eglSwapBuffers() blocks and is rate
limited to display frequency, which leads to visible delays when
many monitors are used.

Handle output resize/close

Meson simplification, add some missing hacks

Use roundtrip in main loop

Build more hacks

Mention use with swaylock-plugin

Explain how to build

Add README

Only build common files once

Very rough multimonitor support

X hacks mostly working

Abstractile partially working

Build more hacks

Voronoi basics working

Also build glx/voronoi