v1.0.0-rc.2

Bugfix

• [#127] keep internal pointers alive whileMarshal() or Unmarshal()
• [#131] generate gcWriteBarrier in JIT (only support Go1.16 [#134])
• [#132] fix stack-overflow error (json.UnsupportedValue) after frequent errors
• [#129] avoid the pointer of argumentval cleared while debugging