Bump minor version, update history.
Added signature for changeset a4c6b86b7cbc
Added tag v0.8.0 for changeset 9e8338f511bf
Fix the problem with blocks not being called in chained overrides.
Bump the patch version, update history.
Added signature for changeset db603bf7b399
Added tag v0.8.1 for changeset 9bf0ab5413b3
Make the spechelpers a little more intelligent.

- You no longer need to do setup_logging/reset_logging in
  a before(:all)/after(:all) block; that's done for you.
- You can now override the logging level for any example group
  by adding 'logging' or 'log' metadata.
- Fixed some documentation, added docs for the spec helpers.