sliceutil: add SplitCompact() and SplitTrimSpaceCompact()

maputil: add SliceOfMaps()

httputil: add context request func

update & version bump

convutil: Add newly-minted ronna/ronto- and quetta/quecto- SI prefixes

colorutil: case desensistize

colorutil: add named colors prepopulated w/ CSS3 standard names

colorutil: add Color.IsZero()

update dependencies, fix small vet issues

pathutil: add MatchPath()