0.4.5

Added:

• A new Forge activity available as forge. It allows updating a forge feedstock on a forge different than the conda-forge.
• A new Check activity available as check that runs rever check.

Fixed:

• example activity's call needs to return True in documentation
• Fixed issue where rever could not be run from within Bash by setting
  $THREAD_SUBPROCS = False.
• a typo in the documentation

Authors:

• Anthony Scopatz
• Hadrien Mary
• Julian Rüth