tox.ini refactor
Add persei dependency to tox..ini
Change all py2and3 references to persei
Remove py2and3
Remove py2and3 tests. TODO: move it to persei.
Remove py2and3 from util.__init__
Use persei from PyPI in tox.ini
Add persei to setup.py
Merge pull request #132 from iurisilvio/persei

Use persei instead of py2and3
Use constant-time signature verification. This fixes a timing attack that would allow attackers to forge messages.

For more information, see http://codahale.com/a-lesson-in-timing-attacks/
#134 Add streql to tox dependencies
Close #136 : Release v0.9.6
#136 Use the development branch only for build status image
Merge branch 'development' of github.com:campadrenalin/EJTP-lib-python into development