Test commit; updated README
Test2
trivial commit
trivialcommit
trivial: cleaning junk
Contour slicing from cv::Mat functions

OpenCVContourMatcher has a class function and I also included a utility
function, thus far I’ve avoided declaring namespaces but when we figure
out what’s going where in the final product we can simplify that code.
Merge branch 'contourmatching-opencv' of https://github.com/izewiske/3Hat into contourmatching-opencv
Merge branch 'contourmatching-opencv' of https://github.com/izewiske/3Hat into contourmatching-opencv
began work on the difficulty testing functions
should compile meow
Merge pull request #4 from izewiske/contourmatching-opencv

I'm just going to pull all this into main and re-branch because I think there is enough here for us to use.
minor update to CMakeLists and .gitignore
merged from master