Reinvent lockup

[satyamakgec]

• Test suite

[satyamakgec]

Please do check with the issue #389 As per the test it is not present in the current code

[maxsam4]

Consider adding a view getLockedToken function which will return sum of cirrently locked tokens of a user so that user can know how many tokens are still locked and how many can they transfer.

[maxsam4]

TIL that references to parameters of an external function are stored in the stack.

[satyamakgec]

@maxsam4 It is done with the review? If yes then @VictorVicente can use this same PR to create the CLI

[maxsam4]

Yeah. The function modifier thing was the last issue.
Everything Looks good to me now.

[satyamakgec]

@maxsam4@adamdossa could you please review it again because of the data structure changes

[coveralls]

Coverage decreased (-0.3%) to 96.042% when pulling 887860e on reinvent-lockup into 7e05021 on dev-2.1.0.