This is a good question I have an original file, and I have a modified svn checkout, when I remember right.
With the version numbering was something weird with 12 or 13.
Maybe there was never a released source code for 1.0.13, there is also no changelog entry for 13.
The binary on qt apps was 1.0.13 and I downloaded the svn version and gave the same version number. As a tarball there exist only 1.0.12.
So I looked now and could not see any differences from tarball to my svn checkout.

Here as far as I know the latest official "tarball"

I uploaded my modified sources to github.

Will upload mihphoto to extras the next days.