Added tag v0.4.0 for changeset 1a9a5af967b6
Bump the minor version, update history.
Add presentation aliaes.
Split out/updated documentation
Add :in_collection automatic option for collection presentations
Adding release checksum.
Added tag v0.3.0 for changeset 82c1a82b51ec
Bump the minor version, update history and gemspec.
Rework to use a more flexible exposure mechanism

- Allows `nil` and `false` as exposed values
- Allows declaring an exposure with a block
Switch to Sixfish RDoc generator
Adding release checksum.
Added tag v0.2.0 for changeset 33a95bf63cae
Bump the minor version, update history.
Add collection presentation.
Adding release checksum.
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