Address similar concern to the one about closures with move-only call…

…ables,

but this time for adaptors.

Address similar concern to the one about closures with move-only call…

…ables,

but this time for adaptors.

Don't reuse the attribute-generating path in rule_parser's out-param …

…overload

of call.  Doing so was wiping out previous partial results, in cases like foo
>> bar, where foo produces a T, and bar is a rule that produces vector<T>.

Fixes #248.

Remove space from declaration of UDLs, because apparently it matters?!

Fixes #216.

Add doc example of unexpected combining sequence parsers.

Example is based on #215.

Fix stale comment in doc example.

Doc update for previous symbol table changes.

Related to #183.