v0.3.0 (16 Mar 2015)
  Changed default collection name to 'log'.

v0.2.0 (27 Jan 2015)
  Recorded error message and stack.
  Added 'onerror' option.

v0.1.1 (17 Jan 2015)
  Minor fix.

v0.1.0 (17 Jan 2015)
  First release.