only replace the var in the function clause that is executed
add support for single arity ops, add dict in rte_server_state
WIP: only replace var for clauses that are executed
WIP 2: add support for clauses
finishing clauses support
Merge pull request #24 from liuhongchao/only-replace-var-in-fun-clauses-that-were-executed

Only replace var in fun clauses that were executed