There is a 10.5MB file checked into the commit history that is just the letter 'a' 10,485,760 times.
lib/common/tests/resources/large_file.bin
The prognosis is good. We can remove large_file.bin from the project by generating it just in time for the tests that rely on it.
Normally removing a large file that's been checked in wouldn't shrink a git project but in this case it does because its easily compressible.
Proposed fix: #396