Tagging v1.4.0 release 

REL : version bump for 1.4.0rc4 

TAG : version bump for RC3 Hopefully the final RC

Release candidate 2 for 1.4.0 

Merge pull request matplotlib#3217 from JulianCienfuegos/master Added some function arguments to the documentation for FuncAnimation

Tagging 1.3.1 

Bumping version to 1.3.1 

Tag v1.3.1rc2 

Tagging 1.3.1rc1 

Tagging v1.3.0 release