Add RelaxNG schemas for all current components.
Add -dumpSchema command-line option to dump the combined entity schema.
Add a Perl script to validate entity templates against the schema.
See #413.
This was SVN commit r7452.
Make animations trigger sound effects.
Adjust attack animation timings to match simulation.
Simplify the animation speed settings.
This was SVN commit r7438.
Support sound group playback from simulation scripts. See #486.
Update some sound group files to sound better for rough testing.
Clean up CSoundGroup a tiny bit.
This was SVN commit r7437.
