Webpack 3 support

Cfr #8

HashMeUp

Issue with hashes creation reported & fixed by @kovenliao (thanks!)

Fix me up

See 7d7023c#diff-d5a954794aa7e931c57caee82b84866e

Hash me up

• changelog: https://github.com/dsebastien/webpack-sha-hash/blob/8bff2148a38afb5729d94f30b852a450a5acb08e/CHANGELOG.MD
• issues: https://github.com/dsebastien/webpack-sha-hash/issues?q=milestone%3A1.0.0

First version

• changelog: 31c8f34?short_path=d5a9547#diff-d5a954794aa7e931c57caee82b84866e
• issues: https://github.com/dsebastien/webpack-sha-hash/milestones/0.0.1