GOWrite 2.1.17

[lpaatero]

Corrected number of (serious) issues in MAC version:

• Arrow keys work normally in text editing, when relevant.
  Keyboard shortcuts mostly in line with Mac standards.
  Supported languages list is corrected.
  SGF file creator (GOWr) is set to GOWr when writing SGF file.
  GOWrite icon in Mac is better.
  Files opened using doubleclick are in in file history.

Note that all MAC features are present ONLY in .dmg installation.