Implement loading comments beyond depth limit

[lukasaldersley]

As reddit will only return up to 10 nested levels of comments in their json API, any comment beyond that must be loaded in a seperate call.

Previously any comment beyond the depth limit would simply have been reported as "deleted".
This adds the option to load those comments individually should the need arise.

I would further suggest you add an editorconfig file (it has been a bit of a fight with my editor to not constantly apply my default formatting to your project) and a license.

[lukasaldersley]

If you'd be open to merge #6 at all, please merge that instead and simply close this here as #6 depends on the changes made here enough that #6 contains the same commits.

[lukasaldersley]

rebase to current master