Decimals should be 8 bytes size

[Paulius]

Expected behavior

uint8 public decimals;

Actual behavior

uint public decimals;

Steps to reproduce the behavior

The ERC20 standard specifies that decimals should be of type uint8.
More: https://theethereum.wiki/w/index.php/ERC20_Token_Standard

P.S. also don't forget to change it in the constructor.