Add support for Axlsx

[jkowens]

Add support for rendering Open Office Spreadsheets using Caxlsx. "Templating" would be the same as used by caxlsx_rails.

[jeremyevans]

Can this support be shipped with caxlsx, or in an external tilt-caxlsx gem? I'm not sure we (tilt maintainers) want the additional dependencies to test, consideration potential usage seems minimal. @judofyr what do you think?

[jkowens]

@jeremyevans yeah it could be it's own gem for sure. When I saw this in the readme I figured I'd send up a PR:

The Tilt team will liberally accept pull requests against the template integration. It's up to the community as a whole to make sure the integration stays consistent and backwards compatible over time.

I definitely understand the concern about adding more dependencies and support effort for maintainers 😅

[jeremyevans]

@jeremyevans yeah it could be it's own gem for sure. When I saw this in the readme I figured I'd send up a PR:

The Tilt team will liberally accept pull requests against the template integration. It's up to the community as a whole to make sure the integration stays consistent and backwards compatible over time.

That's a good point. We should probably remove that language, considering we ended up in a situation where we have many rarely used template engines that we have to support.

[jkowens]

@jeremyevans I'm going to go ahead and close. I appreciate the quick feedback.

[jeremyevans]

OK. If you want to ship tilt caxlsx support in an external gem, we can mention it in the README to increase awareness.