add support for named parameters to filters about jinjava

[igalarzab]

Hi, really nice project, thanks for open source it! 😃

I'm in the need of passing named parameters to filters. I have a translation filter and I need to provide named parameters in the strings when I send them to the translators, so they can have more context when translating them.

I have a dirty-working patch but I haven't figured out how were you thinking about doing it without breaking backwards compatibility with existing filters (with the actual interface filter(Object var, JinjavaInterpreter interpreter, String... args) I don't find a clean way of passing the named parameters).

Any hints?

[boulter]

Hi Jose, I don't think we have a clear idea of how we'd do named parameters. How about starting a PR and we'll work though it there?

Thanks!

[igalarzab]

Sorry for the delay, here is the PR: #105

Please, give some feedback when you have some free time :)