Support more text styles

[GoogleCodeExporter]

I was surprised to see that Gargoyle doesn't support changing the text 
justification or text size. For an interpreter that claims to care about 
typography this is sorely missed!

Original issue reported on code.google.com by curiousdannii on 1 Feb 2013 at 5:59

[GoogleCodeExporter]

You can already customize these settings (and more) by editing garglk.ini 
(although justified text doesn't look great in Gargoyle, in my opinion).

Original comment by znxfire...@gmail.com on 5 Feb 2013 at 2:27

[GoogleCodeExporter]

The issue is that Gargoyle ignores many Glk style hints, not that the display 
preferences can't be changed. Text centering is another one that should be 
added to Dannii's list.

Original comment by Ek.Temple@gmail.com on 5 Feb 2013 at 4:03

[GoogleCodeExporter]

Centred text is one of Glk's text justification options. ;)

Original comment by curiousdannii on 6 Feb 2013 at 3:34