This script takes a range of commits and generates a commit log with the
git2git-excluded file changes filtered out.
It also replaces GitHub issue numbers with GH-XXX so as to not confuse
Git2Git or Azure DevOps. Community contributions are tagged with CC- so
they can be detected later.
The output looks like this:
```
Carlos Zamora (2)
* Pass mouse button state into HandleMouse instead of asking win32 (GH-6765)
Dustin L. Howett (6)
* Disable MinimalCoreWin when OpenConsoleUniversalApp is false (GH-7203)
James Holderness (1)
* Add support for the "doubly underlined" graphic rendition attribute (CC-7223)
```
Yes, the numbers are wrong. No, it doesn't really matter.
