Expose the groups path from root
Allow groups to create and delete sub groups
Whitespace fix
Return newly created groups when possible
Add more node creation functions to H5Group
Fix some misnamed function args
Add .root property to H5File
Return an H5Group from H5File.create_group
DRY up delegated function calls from H5Group to H5File
Add equivalent tests for operations from H5Group
Remove unused variable binding
Remove unused variable binding
Pass delete_existing along with H5Group.create_group
Test that delete_existing is passed along properly everywhere
Fix signatures and docstrings for delegated functions
Use H5File docstrings directly in H5Group
Add .filename property to H5Group
Use pathname instead of path_name
Make `data` a keyword arg in create_table.
Merge pull request #31 from enthought/feature/create_subgroups

Refactor group and node manipulation from H5File down into H5Group