As with taskwarrior (src:task), upstream distributes tarballs which exclude the testsuite, so we need to make our own.

Timewarrior git also includes a git submodule (src/libshared) containing code that will apparently be shared with taskwarrior/taskd (but isn't as of 2.5.1 and 1.1.0). The README for this submodule requests that it not be packaged seperately, and since it consists of a relatively limited number of shared functions, with no API guarantee for users outside these projects, this seems reasonable.

The get-orig-source target in debian/rules creates a tarball as per these considerations.
