removed wire_datum_t
added coercion from string to number
improved error message for intersection of `return_vals` and `foreach`
js cache written but untested
updated contains
CR
CR
CR
removed debugf
Merge branch 'mlucy_kill_wire_datum_t' into next
Merge branch '877_number_parsing' into next
Merge branch '1104_retval_foreach_errmsg' into next
Merge branch '1105_js_compilation_cache' into next
Merge branch '870_contains_func' into next
Merge branch 'next' into sam_939_alt