Remove deprecated pydot drawing functions.
Add get_fobj() to networkx.utils
Better pydot conversion. Add draw_pydot().
Small typo. Missing pydot import. Updated tests.
Fixing default show mode for draw_pydot.
Add documentation for inline pydot drawing within IPython notebooks.
Adding draw_pydot to reference documentation.
Add faster tests for graphical sequences.

Use linear time algorithm.
Add testing for directed, multigraphic, and pseudographic sequences.
Whitespace cleanup.
Change canonical name to is_graphical from is_valid_degree_sequence.
Small doc formatting fixes and updates.
Combine basic graphical setup into single function.
Change graphicality testing function names

Use is_digraphical(), is_pseudographical(), and is_multigraphical().
Add graphicality testing docs
Update documentation and formatting for Sphinx
Faster Havel-Hakimi generator and directed version too.
Add docs for directed Havel-Hakimi generator and small doc fixes.
added the Katz centrality with tests
Update the code documentation.
Update the code documentation.