Alchemist v1.1.1

Enhancements

• [Test] List tests inside current test file and prompt for jumping to it. @whatyouhide <3
• [Completion] Use company-dabbrev-code as fallback backend @chrismccord <3
• [Server] Use a custom server environments variable (alchemist-server--envs)

Bugfixes

• [Server] Remove legacy IEx.Autocomplete call, it's not working anymore because
  IEx.Server is now added through application environemnt.
• [Complete] Fix doc and definition lookup through company candidate selection
• [Goto] Fix issue that mark will be moved even without founded definition