travis has svg badges now (and they intend to transition png to svg)

Now we can enjoy retina 100%
A new flake8 is out. Our code is bad again!
Merge pull request #850 from alex/new-flake8

A new flake8 is out. Our code is bad again!
Merge pull request #851 from reaperhulk/fancier-travis-badge

travis has svg badges now (and they intend to transition png to svg)
Fixed #809 -- switch back to always using UnsupportedAlgorithm
Address most of my own comments
Add additional reason tags
Update tests and raise sites
Update tests
Fixes to @alex's comments
Remove change to bindings
Pain the bikeshed a different colour
Merge pull request #849 from public/changeup-exceptions-2-electric-boogaloo

Use a single tagged exception instead of a hierarchy
bump versions and changelog for third release
underscore
Merge pull request #852 from reaperhulk/third-release

bump versions and changelog for third release
update versions for 0.4.dev1 and add boilerplate to changelog
Merge pull request #853 from reaperhulk/reopen-master

update versions for 0.4.dev1 and add boilerplate to changelog
Add NPN functions.
add some comments to note the duplication between setup.py and tox.ini