fixes object operators
impl array, bool, and char operator
impl int operators
impl float operators
modifies object::to_vector(runtime&)
modifies cpp arguments with runtime ref
modifies cpp arguments with runtime ref
fixes sample
Merge branch 'object' of https://github.com/nokamoto/az into object

Conflicts:
	obj/obj.cpp.cc
impl string operators
impl string operators
Merge branch 'object' of https://github.com/nokamoto/az into object

Conflicts:
	obj/obj.string_.cc
adds class grammar
adds class grammar
wip class tree
impl field tree
impl class constructor
merge
impl class member
impl class method