Variables: implemented limits on number of variables in a scope, the length of variable names, size of variable values and the number of accesible match values.

Enforced limits on string length and handled the finite nature of integers for number parsing and the construction of the AST.

Encoded-character: resolved error reporting issue, added some syntax error tests and fixed some parsing bugs in the process.

Envelope: <> return path now always matches as the empty string, regardless of the specified address part.