testdata files with `*.gz` extension not downloaded when cloned

[jakobherpich]

When I download the zip-file or clone the repository, the files with .gz file extensions are not downloaded correctly. They are simply text files containing the files metadata:

$ git clone https://github.com/pynbody/testdata
$ cd testdata
$ cat g15784.lr.01024.gz 
version https://git-lfs.github.com/spec/v1
oid sha256:f4adf53e8a661d9ba2d470a8c9ad9b863791b569845029e7a69838aec5aeb2ac
size 51403138

This file cannot be loaded with pynbody and I cannot perform unit tests. The actual files seem to be missing.

[apontzen]

This is a git lfs repository - unfortunately github started asking for money for an lfs repository, so we went back to using the .tar.gz here: http://star.ucl.ac.uk/~app/testdata.tar.gz

I should probably remove this repository, actually, thanks for the heads up