Enable ruby19_syntax by default

[dishcandanty]

I imagine this is somewhat of a breaking change. But wondering if there's any reason why this wouldn't be enabled by default in 2020.

[fig]

Are you referring to symbols as Hash keys?

{ :foo => 'bar' } vs { foo: 'bar' }

If so, the general fashion within the community appears to use 1.9 syntax for source code but use hash rockets for output. FWIW, I'm quite happy to keep it that way.

[dishcandanty]

Yup! ruby19_syntax: false => ruby19_syntax: true. I hadn't really paid attention if that was generally accepted within the community. I just like being able to copy and paste the output, without it being an immediate rubocop violation.

[HarlemSquirrel]

@paddor I'm OK making ruby19 syntax the default for the next minor version bump if you are but we may also want to rework this into something like hash_format to support JSON for #70

[paddor]

@HarlemSquirrel Yeah, let's do that. 👍