[Fix #96] Show all error messages at point
Document changes to error reporting [#94]
[Fix #98] Add support for pep8-naming errors
Add @yannick1974 to credits

Thanks for your contribution!
Remove the lua-mode hack [#56]

Apparently Lua mode does not cause the tests to hang anymore, see
immerrr/lua-mode#50.
[Fix #95] Provide independent error navigation
Refactor test suite to split resources from tests
Upgrade to Vagrant 1.1.x
Fix header and footer
Do not enable Flycheck for no-undo buffers

These are buffers whose name starts with a space.