Added new example showing offscreen rendering (GPGPU example here) without any visible window.
Text has point_size and pos properties

And text always draws in that point size, even if inside a viewbox.
Text: can set color, and supply pos and point_size in init
ModularShader: Fix that program is not recompiled on prepare()

... unless necessary
Address comments
Updated README.
Fixed dash character.
Text: address comments
flake
Added notes about the subpackages.
Added some backends.
Text.pos does not use transform.
Text usable in normal canvas
WIP: EGL backend
FIX: Add to Travis
FIX: Minor fixes
FIX: Better version [ci skip]
FIX: Better version [ci skip]
FIX: Use software [ci skip]
Text: addressed comments