first!
finish removing any es5 methods shimmed by React
fixes #29

allow scrolling to month of min date. also constrains focused values,
and makes sure the dates stay in range
fin
merge es5 code to master
clean up

remove unused variables, extra components, etc
experiments
fix has
Merge pull request #30 from yiminghe/master

fix has
merge
Badges!
fin
Merge branch 'replace-transition'
move and rename
better cx and fix tests
name changes css #18 also removes shims #31
tests
test
doc updating
docs