Support runtime configuration

Thanks to the help from @ImmaculatePine in #75 and #76.

Upgrade dependencies

Upgrade several dependencies. Thanks to @RyanSiu1995 in #74

Use the exact url in the pagination response

thanks to @yuchunc in #73.

Allow to configure connection timeouts / remove CI for elixir 1.3

Thanks to @bugant in #68.
Additionally, we removed CI testing for elixir 1.3 in #69 and added newer elixir & erlang versions instead.

Add custom dimension picture function

Thanks to @alexcastano in #66

add get_object and get_object_edge

Thanks to @bugant in #65

Support generic publish to post to the feed edge too

Thanks to @bugant in #63

Change to unversioned default graph URLs and add in-app payments methods

• Please specify in your app's configuration which graph version you like to use. The default has been changed to non-versionized URLs: #57
• Added in-app payments methods #58

Version 0.17.0 - Use HTTPoison and separate Graph modules per API

Thanks @tfinnell for the work done in #53!

Version 0.16.0 - Convert functions to elixir code style (snake_case instead of camelCase)

Thanks to @paulruescher we have converted the library to use the standard code style used in elixir projects so using the library should feel much more natural now.
Also the tests got improved to mock the Facebook API instead of calling it directly and we're using credo for static code analysis.