rule-prechecker as web accessible
hsl slide editing works
update parsedValue with object, not string
CssSize object
right = right for TRBL
prenormalisation for 1 & 4 CSS Size values
FourCssSizes editor, parser & prenormaliser
when merging saved and updated values, only parse the saved value once
remove obsolete RegexValueFormat ValueFormatsParser BorderFormat
remove ObjectParserAndBuilder, check for match in parsers
remove ObjectParserAndBuilder defn, and minor refactorings
remove tracing
trim value in advance of prenormalising
prenormalise only returns value object
ComponentsEditorModel type param
editor model constructors all take type arguments
all editor models constructors take type arguments
stash
get BorderType working
borderType singleton, instead of BorderType class