One other thing I might mention...

> * If a `Throwable` is thrown by a service during its `init` or `start` function, the `boot-services-with-cli-data`, `boot-services-with-config`, or `boot-with-cli-data` call made to bootstrap services would now return the `TrapperkeeperApp` instance rather than cascading up the `Throwable`.

We advertise these functions in the README.md so it's probably worth mentioning the compatibility break here.