Rename `getContractLogs2` api method to `getContractLogs`

1.9.1-echo.12-rc.9

up version to 1.9.1-echo.12-rc.9

Fix `setRequiredFees` method ([email protected])

Fix setRequiredFees method of Transaction class, that rejects when non-Echo asset was used to pay transaction's fee.

Fix `setRequiredFees` method

Fix setRequiredFees method of Transaction class, that rejects when non-Echo asset was used to pay transaction's fee.

Change `call_contract_no_changing_state` database api method

1.9.1-echo.12-rc.7

v1.9.1-echo.12-rc.7

Change `getContractLogs2` api method

Wrap topics items into array before sending to ws.

Change `getContractLogs2` api method

Allow provide null instead of [] to allow any topic for getContractLogs2 api method.

"getContractLogs2" method

1.9.1-echo.12-rc.4

v1.9.1-echo.12-rc.4

Convert "ArrayBuffer" to "Buffer" in browsers

1.8.2

Convert "ArrayBuffer" to "Buffer" in browsers

1.8.1

Fixed map serializer

1.9.1-echo.12-rc.2

[ECHOJS-229] fix browser registerAccountPow