Screen/GPU bugfixes and better support

Bugfixes:

• Fixed resolutions outside of the default (80x25) not rendering properly (Might fix #19 (closed))
• Updates to the entire screen or to render buffers (state and area events) will no longer desync when a newline character is set (gpu.set(*,*,"\n"))

Features:

• GPU (VRAM) render buffers will now update (gpu.bitblt) (Fixes #20 (closed))
  • A new WebSocket event called area was made to account for this - it works the same as state, but slightly tweaked
• Wide characters (e.g. Japanese, CJK, Halfwidth and Fullwidth forms) will now show up and render normally (Fixes #3 (closed))