* Function names should start with % * Create FunctionName from string * Implement displaying of FunctionName as %nnnn with fallback to #xxxx * Run rustfmt and fix FunctionName::with_string in parser * Implement FunctionName::new as a generic function * Binary function names should start with # * Implement NameRepr for function name * Fix examples in docs to reflect that function names start with % * Rebase and fix filecheck tests