v0.7.0

Features

• #35 dockerfile image size reduced to <100Mb
• #34 install a testing enviroment via pip with pip install -e .[testing]

Changes

• #34 cli app renamed: matrix_registration => matrix-registration
• #33 introduces a new config option admin_secret to choose a secret for the api
  previously this just reused the matrix homeserver's shared_secret, so if your api
  is publicly reachable please change this value