Upon request from MapsGL team and Ben Vanik in particular, added ANGLE_timer_query extension proposal.
Merge pull request #238 from kenrussell/timerquery

Upon request from MapsGL team and Ben Vanik in particular, added ANGLE_t...
Renamed 1.0 to 1.0.0, and symlinked 1.0 to 1.0.1.
Merge pull request #239 from kenrussell/1.0rename

Renamed 1.0 to 1.0.0, and symlinked 1.0 to 1.0.1.
Based on public_webgl discussion, specified that queries' results only become available at well-defined times.
Merge pull request #240 from kenrussell/timerupdates

Based on public_webgl discussion, specified that queries' results only b...