Tentative implementation of the `next` function
Refactor option parsing internals to support strict mode
Fix value normalization in strict mode
Fix handling of boolean options with bad values
Fix typos on Mix
Fix typo on ExUnit
Merge pull request #2299 from lucasweiblen/fix-typos

Fix typos
Speed up CLI tests by avoiding booting Elixir
Fix match in `Mix.Tasks.Run` test
Merge pull request #2300 from lexmag/mix-run-warn-fix

Fix match in `Mix.Tasks.Run` test
Make the title in the Readme generated by mix new more prominent
Merge pull request #2301 from alco/mix-readme-template

Make the title in the Readme generated by mix new more prominent
Fix typo in Agent docs

Replace reference to GenEvent with reference to Agent
Fix typo
Trailing whitespace.
Merge pull request #2306 from benjamintanweihao/patch-2

Trailing whitespace.
Merge pull request #2305 from benjamintanweihao/patch-1

Fix typo
Merge pull request #2304 from knewter/feature/agent_doc_typo_fix

Fix typo in Agent docs
Unify mix run tests
Description for mix test --seed option

Signed-off-by: José Valim <jose.valim@plataformatec.com.br>