v1.1.3
* Require Elixir 1.9+ * Update changelog * Bump tzdata ETS file * Bump deps in mix.lock * Version change to 1.1.3 in mix.exs * Update readme to reflect v1.1.3
* Require Elixir 1.9+ * Update changelog * Bump tzdata ETS file * Bump deps in mix.lock * Version change to 1.1.3 in mix.exs * Update readme to reflect v1.1.3