Diff-pdf-visually

Fixes

* build: restore declared compatibility with py36, py37; fix tox config instead

Features

* New 'tempdir' argument to pdfdiff_pages, to specify a directory in which temporary images & image difference will be kept (f72bb560)

Fixes

* list of returned pages did not consider significance threshold (5)

Features

* new function: pdfdiff_pages returns page numbers with differences ([d11fb27](https://github.com/bgeron/diff-pdf-visually/commit/d11fb27854cbd38a2b570589a331b7c8979a9430))

* Moved build system from poetry to hatch, to make `pip install -e` possible.

This is a purely cosmetic release, removing spurious output.

Bug Fixes

* don't print version output from pdftocairo ([5a3adea](https://github.com/bgeron/diff-pdf-visually/commit/5a3adeaec2b960286dde23383114b7fc8a710ff8))

Bug Fixes

* open log file for read+write; this fixes a bug on Windows ([eaaa293](https://github.com/bgeron/diff-pdf-visually/commit/eaaa293e3f7259ae58158e37f8f6d779bfbba4e8))
* widen ImageMagick compatibility by allowing for 1.Inf ([7e1215f](https://github.com/bgeron/diff-pdf-visually/commit/7e1215fc3608390174cae4d4eb795f0002fc2e74))


Features

* add detection for the command name of ImageMagick's compare ([2669611](https://github.com/bgeron/diff-pdf-visually/commit/266961144bce877988e2a746bd5ce1d951a96f2e))