registered DictCompat as a collections.MutableMapping
Registered  `Group` and `AttributeManager` as `MutableMapping`
individually.

Removed registration of `DictCompat` as `MutableMapping`
Added tests for collection.MutableMapping registration.
update ANN
Merge branch 'master' of https://github.com/h5py/h5py
Modifications for astype
Add tests for astype context manager
Document astype method
Merge MutableMapping PR
Add contributor guide
Contributor guide tweaks
Merge pull request #349 from andrewcollette/astype

Add a context manager allowing reads to a new destination type
Merge branch 'docs_2.2'
Adding FreeBSD Platform support, closes #348
Merge branch 'freebsd_fix'
Fix scalar compound type issue
Address issues from #347
Merge pull request #353 from andrewcollette/issue_347

Address issues from #347
Merge pull request #352 from andrewcollette/scalar_compound_issue250

Fix scalar compound type issue
Update licensing header