4.x compatibility issues with 1.x

[nazarhussain]

Found some compatibility issues for 4.x those needs to be addressed to further investigate the breaking changes.

• Contract constructor does not support swapping parameters. a.k.a. As second parameter you can only pass the address, but in 1.x you can either pass address or contract options.
• In 1.x the contract.deploy works with the ABI without any constructor definition and assumes empty arguments for it.
• In 1.x the contract.deploy().estimateGas() does not require to specify the address.
• Transaction confirmation event is returning the confirmations number which are not aligned with 1.x.
• Transaction PromiEvent does not support error event.
• Transaction PromiEvent have mixed types for event data, it have to be consistent with the ReturnFormat user specified.
• Contract method getPastEvents with the option {fromBlock: 0} does not work
• Contract method getPastEvents does not return right event name when called with allEvents
• Contract event object didn't have the id attribute
• Contract event object have attribute returnValue instead of returnValues