Return list failing to parse surround characters

[bsuth]

The following is giving a weird parsing error, where Erde thinks that it cannot find a matching end brace, even though it is simply a string:

return ('{')

Note that this only seems to happen w/ return and only when parentheses are used.

[bsuth]

closed by https://github.com/erde-lang/erde/commit/37a3d530c6520391760926384700292cd81caf98