Add parenthesis to a regex in order to capture its value during evaluation.

Deprecated. -- Prefer `def` and program against ExpandableRoutes
Define a routing table from the terse routing syntax.

Sort a flat routing table of entries to guarantee that the most
constrained route entries appear in the table prior to entries which
have fewer constraints or no constraints.

Sort the grouping of route entries which all correspond to
`route-path` from `groupings` such that the most constrained route
table entries appear first and the least constrained appear last.

Append `route-path` to `route-paths` if route-paths doesn't contain it
already.