* Constants and accounts compile as standalone
* Mass replace ttmath by Stint
* Adapt utils_numeric proc
* Adapt memory.nim
* Deactivate "ValidationError" test that requires pow(2, 256) function
* Fix state_db toByteArrayBE
* Fix more getUint toInt conversion
* Remove absolute value ambiguous call
* Stub-ify proc and opcode that requires pow - https://github.com/status-im/nim-stint/issues/37