Underscores in integer literals are not supported

[KaiRo-at]

Description
When underscores are used in integer literals as described in https://solidity.readthedocs.io/en/develop/types.html#rational-and-integer-literals to increase readability, the linter wrongly reports a syntax error:
30:19 error Syntax error: unexpected token _

Steps to reproduce

Put code like the following into your contract and run ethlint on it:

total = 50_000_000 * (uint256(10) ** decimals());

Expected behavior
ethlint should accept and correctly interpret this syntax.

Operating System
Linux

Linter version
Solium version 1.2.4

Comments
As a linter should help improve code readability among other things, and this is a readability feature, it would be nice if both work together. :)

Priority
Low as it's easy to temporarily work around.

[duaraghav8]

This is a bug in Ethlint's internal solidity parser. I'll ship the fix in the next release
Thanks for reporting