Writer tests.
Tighten up test setup.
Abstract document test no longer needed.
isEqual + assert module fix.
Fix some more tests.
Annotation business.
Fix regression.
Merge branch 'master' of github.com:substance/document
Fix some bugs in annotation transform.
Trigger an event if an annotation has been changed.
Fix bug in writer test.
Delete before insertion.
Provisional annotation notify (hacky).
Get annotations (by node/range/type)
Capitalize.
Use SubstanceErrors.
Generalize selection helper.
Initial iteration on implementing generalized annotation support.
Move uuid gen to setup method.
Bump underscore dependency.