This removes the spacing tinkering when parsing format specs.
The following example uses the old behavoir:
format-test = <label-foo> <label-bar>
format-breaks = <label-foo><label-bar>/<bar-test>
`format-test` would replace all occurences of ' ' with the
a space string with defined `spacing` as its width. `format-breaks` would
not validate as the tags where split with ' ' as delimiter.
All that nonsense has been removed and each tag is extracted as is.
The `spacing` parameter can still be used to apply N extra whitespaces
between the tags, but it is now 0 by default.
Build the format sub-strings (%fill%, %indicator%, %empty%)
before adding it to the builder to avoid having it generate
alot of duplicate content (tags, etc)
Make it possible to set different size
and color values for the two properties.
`overline-size = 2`
`overline-color = #f00`
`underline-size = 5`
`underline-size = #00f`