This means you can now eg navigate to `~/Programming` and run `dura watch` to watch the whole directory recursively. The program will scan each child dir until either a repo is found or the max depth is hit.

Includes, excludes and the max depth can be manually tweaked in the `config.json` file.

Algorithm now works as follows:

1. Include everything in dir
2. Exclude anything in the exclude list.
3. Include everything from \1 that's also in include list, even if it were excluded in 2

The code has been tidied up in several places to improve error handling and quality.

**THIS TEST IS NOT WORKING YET**

This reverts commit 59b0649.