This is a patch release containing several bug fixes regarding smart contract execution.

Bug Fixes

• [ctr/lua] limit bignum max,min (-(2^256-1) ~ (2^256-1))
• [ctr/lua] fix compile error
• [ctr/lua] rollback state when error occurred in contract.call #74
• [ctr/lua] reset amount value when error occurred at contract.call/deploy