Potentially bring back asset path templates

[davestewart]

Background

Before version 0.8.0, Content Assets supported asset path templates (see code):

const srcAttr = interpolatePattern(pattern, srcRel)

It could be nice to bring them back, especially considering #20 where it might be easier to process a single folder to upload to a 3rd party service (needs investigation).

Proposal

Would need to (re-)implement:

• config
• setup
• path transformation
• tests

Notes

Not urgent!