mention itertools/functools in introduction
add references
add heritage to documentation
add "virtues" snippet to index
Merge pull request #45 from mrocklin/heritage

add heritage to documentation
small edits to heritage
Merge branch 'master' of github.com:pytoolz/toolz
distinct -> isdistinct
iterable -> isiterable
add control flow prose
edits to control
fix unwanted bolding on Lazy explanation
edit docstring for iterate
minor edits to heritage and control
no wrapping on rst list
add pytoolz to title
prominently link to documentation in README
drop PyToolz in README
Mention relation to functional language in intro
remove backmatter