update HTTP case method macros to allow passing an existing connection and a body
set required elixir version to the actual required version
Merge pull request #203 from lau/bump_elixir_version_12_4_dev

Set required elixir version to the actual required version (0.12.4-dev)
revert #do_process to private and fix typo and ensure with test
Merge pull request #200 from mathieul/master

update HTTP case method macros to pass both conn and body
URI parser now raises ArgumentError
Streamline first steps
Update README.md
add compile step to avoid getting this error: '** (Mix) The task server could not be found'
Merge pull request #205 from mkrogemann/master

add compile step to avoid getting this error: '** (Mix) The task server ...
Update simple_ecto example dependencies. (Was done with: mix deps.update --all)
add missing compile step in simple_ecto example README
Merge pull request #206 from lau/fix_ecto_example

Fix simple_ecto example README and deps
Fix sendfile

* Use transport module instead of :file
* Prevent client errors from raising a badmatch
* Return :ok from response body fun (as per :cowboy spec)
Merge pull request #204 from fishcakez/sendfile

Fix sendfile