txt v1.0

txt v1.0 is released
that was a huge bump

• api is pretty different, re-read it all
• much resilient error checking
• there is now a limit to the font size and the window size
• fixed bug where charsPressed would return what I call a "null string",
  as in, a string with only a single null character in it
  • yeah it's called charsPressed now
• added icon to window
• generalized module loading: path/to/mod to load path/to/mod.wren or path/to/mod.txt
  the separator is also formatted for each OS