Log Message:
Version 0.12.2
Released on May 16 2017
- Fix a bug in `safe_join` on Windows.

Version 0.12.1
Bugfix release, released on March 31st 2017
- Prevent `flask run` from showing a NoAppException when an ImportError occurs
  within the imported application module.
- Fix encoding behavior of ``app.config.from_pyfile`` for Python 3.
- Call `ctx.auto_pop` with the exception object instead of `None`, in the
  event that a `BaseException` such as `KeyboardInterrupt` is raised in a
  request handler.