Modernize JSON::RPC

[azawawi]

• Modernize META.info to META6.json
• Add Test::META tests
• CI: Test on macOS and windows on 2016.12 and latest. Please enable AppVeyor support.
• Add missing LICENSE file.

[bbkr]

Thanks, I'll review your changes during weekend (not much free time after $dayjob).

If we speak about modernization - this module was written in early Parrot VM era. It is full of antipatterns (exception based flow control, procedural design without proper requests isolation). And it is pretty much dead protocol - https://www.google.com/trends/explore?q=json-rpc,http%20rest .

I have to estimate time required for proper refactoring (with support of parallel batch processing of course and switch to more polished modules like JSON::Fast) and decide what will be the future of this module.

[azawawi]

@bbkr Thanks for your time. I am using it for Odoo::Client so it is not dead as a protocol considering a big enterprise Odoo ERP is using it for integration work :)

[bbkr]

Please take a look at refactoring roadmap #32 .
Comments are welcome.

I think this should take about 2-3 weeks, including applying changes from your MR and enabling AppVeyor.

[azawawi]

Updated the roadmap. Thanks for your work 👍

[azawawi]

Thanks 👍