UQTk version has a number of bug fixes:
- updated the Sundials submodule to 7.1.1. Code is now also compatible with externally provided Sundials library version 7.1.1
- fixed a linking bug on linux for the umbridge example
- modernized CMake (now requires CMake version 3.12 or higher)
A known issue is that when you compile in parallel (make -j) on a mac with the GCC suite, one target is not compiling properly. To fix this, just run make again after the parallel make exits.