Tracktable Data 1.7.3

Oops! The 1.7.2 release had the Git LFS placeholders rather than the actual data files. This led to an error when you tried to use the shoreline or river data.

There are no functional changes in this release but the data files should be real.

Tracktable Data 1.7.2

This release goes with Tracktable 1.7.0.