Merge pull request #196 from nearbuy/master

Composite methods to explicity create from parts array
Update CHANGELOG for #196
Bump version for #196
Don't rescue schema update failures

These were inconsistent with each other (some only rescued timeouts,
others handled transport exceptions as well) and with the rest of the
module, which expects you to rescue these errors yourself.

This is a breaking change.  The old API was undocumented and
potentially dangerous.