Merge pull request #101 from lowks/master

Simplifying .travis.yml since now travis has rb17 in their otp_release
Merge pull request #105 from lowks/master

re #104 changing mix.exs because :env key in mix.exs project configuration is deprecated
Merge pull request #106 from lowks/master

Starting updating deprecated Hashdict.new by cleaning up tests
more elixir soft deprecations