Render only annotated PDF pages

[f3fora]

Remarkable cannot add white pages or delete useless pages from a PDF.
As workaround, I usually add a white page after each document page and then upload this document on the tablet, so I can read and annotate the document and add comment on white pages. However several pages aren't use and I do not really care about them.

Exporting only the annotated pages will be a great feature. This features is already present, for example, in rmapi, but there's no great open source PDF tool in go, so the render is bad.

[rschroll]

Seems reasonable to me. We already have a list of changed pages, so it wouldn't be hard to restrict the rendering to just those pages:

rmrl/rmrl/render.py

Line 74 in fac76e3

changed_pages = []

[f3fora]

Thanks.