Merge branch 'hotfix/0.18.1' into devel (in fact version 0.18.2)
Missing values: omit NA values when checking for negative entries of null rows
Change behaviour of [,NMF when using only one argument: now drop only if length-1 value and drop missing, or if drop=TRUE
Fix bug/enhancements in coef<- and basis<- functions: now update dimnames on the other factor as well, and allow the user to only use the value and leave the dimnames untouched
Use ggplot2 for corplot
Fix bug in NMFStrategyOctave@onReturn: check for NMFfit object must not be recursive
Fix some unit tests: update test for [,NMF and fix test for nmf(method='list')
Update vignettes
Fix unit tests for [,NMF (again)
Update doc
Bump version to 0.18.3
Update documentation
Fix documentation issues
Fix NAMESPACE issues
Change URL to NMF/master
Update staticdocs
Bump version to 0.19 and update vignette
Merge branch 'release/0.19'
Add staticdocs for stable version