Try loading possible versions of library.  Fix #44
Add '-6.Q16' suffix

Because Arch Linux is using yet another suffix.

https://www.archlinux.org/packages/extra/i686/imagemagick/
Changelog for cherry-picked commits

cbc595c71527c8e425f7c25387784e0cf62576e3:
93a079b90d9d4ffe62c369f5bae4b0deebc8a6c0

8ef3c443dd6103981b3b32674020e4b7d7106acf:
3e4bee8cf0aa9d77c07a9841a1a72d8a2947a9bd
Release 0.2.4
Merge branch '0.2-maintenance'
CI notification (IRC)
Use coveralls.io
Set the target source
Remove upload_doc command
Merge branch 'master' into pytest
Go to pytest
Run slow tests as well on Travis CI
Provide --skip-slow instead of --run-slow on CI
Show duration times
Use coveralls.io
Install wand using -e option in Travis CI
Print py.test --help to debug CI
Do not --skip-slow by default
Don't print py.test --help anymore
Better way to workaround insert bug on < IM6.7.6-0