Log Message:
Update to 2.15:

Artur Dryomov (1):
      symbols/typo: rework typographic layout.

Sergey Udaltsov (9):
      Add support for Latinamerican Dvorak layout
      added lk(us)
      fixed the license (removed GPL)
      Removed GPLv3 line
      Fixed Singhala -> Sinhala
      Updated cm layout
      Updated from TP
      Update from TP
      Release 2.15

Stefan Dirsch (1):
      Define <LSGT> key properly in basic layout