Add optional --watch-dir command line argument #155
Merged
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Adds an extra argument for what directories to watch for changes. (Defaulting to the same directory that files are served from).
I mentioned in the commit message, an example use case (in fact, my use case) is only watching the build directory instead of all the unbuilt source files. Seeing as when the unbuilt files change, the code still needs to be recompiled before any changes take affect. In that situation reloading before then isn't helpful, it's only when the build files change that I want to reload stuff.
Also should resolve #153 (if the comment there doesn't work)