Updated Travis link in README
Merge pull request #128 from sushant-hiray/doc

Updated Travis link in README
Update .mailmap
Update AUTHORS
README: add mailinglist and chat
CONTRIBUTING: Update a link
README: update link to the LICENSE file
Merge pull request #130 from certik/license

README: update link to the LICENSE file
README Make debug line easier to copy & paste

Previously it was multiple lines, which are difficult to edit on the command
line prompt. Now it is just a single line, which is easy to copy and paste, as
well as to edit after it is pasted to the command line.
Merge pull request #131 from certik/readme

README Make debug line easier to copy & paste
Move documentation from README into doc/
Fix a link to style_guide
Merge pull request #129 from certik/gitter

README: add mailinglist and chat
Merge pull request #132 from certik/docs

Move documentation from README into doc/
Fix a docs string
Merge pull request #135 from certik/docs

Fix a docs string
minor cleanup in pow_expand method

put the return self; statement immediately after the two if statements
at the beginning. Note that this commit doesn't change the logic of the
expand method.
Implement vec_basic and related functions

In particular: eq, compare and printing
vecs_equal -> vec_basic_equal
dicts_equal -> umap_basic_int_equal