DOC: definition of weak connectivity in is_weakly_connected docstring
TYPO: Atrracting
Merge pull request #1147 from argriffing/typo

TYPO: Atrracting
Merge pull request #1146 from argriffing/weakly-connected-docs

DOC: definition of weak connectivity in is_weakly_connected docstring
Link to github.io instead of lanl.gov
Move common_neighbors out of link_prediction

The interface is also modified to return an iterable.
Reference link_prediction in documentation
[fix] only nodes from the k-shell can be in the k-corona
[fix] wrong definition of the k-shell in the pydoc
Merge pull request #1149 from frncsrss/fix_core_k_corona

Speed up k-corona computation.
Merge pull request #1150 from frncsrss/fix_core_k_shell_doc

Fix k-shell pydoc.
Merge pull request #1148 from ysitu/link-prediction-doc

Move common_neighbors out of link_prediction and add link_prediction in generated documentation