Refactor DIFFMAT into the COLLOC class. (Not working yet.)
Refactor colloc*.diffmat() into colloc.baryDiffMat().
Minor fix in input counting.
Tidying up a few typos.
Merge remote-tracking branch 'upstream/development' into fix-colloc-diffmat
Merge pull request #1017 from chebfun/fix-colloc-diffmat

Fix colloc diffmat