Updated oniguruma dependency to support node.js 6

[janb87]

Fixes #72

[winstliu]

Should we always test the latest Node version, eg using node?

[janb87]

Would just list the versions explicitly. Most projects do it like that.

[zeke]

@50Wliu I see you added the needs-testing label. What testing need to be done before this can be shipped?

[winstliu]

Just some basic regression testing should suffice, though you probably know more about what needs to be done than I do :).

[zeke]

oniguruma doesn't seem to have a changelog or release notes.

Hey @zcbenz, @alexandrudima, and @evanlucas: do you know what breaking change happened in oniguruma from 5 to 6?

https://github.com/atom/node-oniguruma/commits/master

[alexdima]

@zeke: atom/node-oniguruma#46

And the relevant comment:

// This is the only way to get caching between `FindNextMatchSync` calls:
var str = new OnigString("hello world");
scanner.FindNextMatchSync(str, 0);
scanner.FindNextMatchSync(str, 1);
scanner.FindNextMatchSync(str, 2);
...

To benefit from caching between calls on the same scanner instance you need to create a OnigString up-front. I explain the reason behind that in the PR.

[ashleygwilliams]

hey ya'll- what can i do to help move this forward?

[zeke]

Just landed this in a new major version: 6.0.0

[ashleygwilliams]

zomg amazing!! thank you so much! 🎉