cppbc: fixed invalid brace mismatch errors
cppbc: added "maybe" (nullable) property type
cppbc: fixed string_find_rev_any algorithm
cppbc: serious refactoring, array iterator class
fixed SGS_PATH ignoring bug, refactored and clarified errors
fixed unary + nop bug, added string formatting optimization features
fixed number printing, added tests
multi-property-set, updated docs
fixed 'isset' behavior
cppbc: fixed sgsString comparison funcs/ops
cppbc: fixed mishandling of handle self-assignments and variable != op
fixed io_stat
fixed isset behavior with dict/int
v0.9.5, bugfix update 1