[BUGFIX] Use unicode matching for patterns

[jbaron-gingco]

JSON allows all unicode characters, thus the matching should work when using unicode characters.

[bighappyface]

+1

[jbaron-gingco]

If you approve of this, could you merge it and maybe even create a new release? This change is important for the application we're developing, and I'd hate to make a fork or require some git branch.

[bighappyface]

@shmax are you good with this?

[shmax]

Sure, what's not to like? 👍

[bighappyface]

@jbaron-gingco please see https://github.com/justinrainbow/json-schema/releases/tag/4.0.1

[jbaron-gingco]

Thank you :-)