pypdfium2 in rasterize() causing memory leak?

[sidharthrajaram]

pypdfium2 seems to be causing issues, specifically a memory leak: #162 (comment)

To that end, I was curious why pdf2image usage was replaced with pypdfium2 in rasterize()?

• Previous usage of pdf2image: 9e2572b#diff-c8bbd899ddabbbe15845b68926b154a3be7e36fd7ebed7f59ea14c39f590be5f

[lukas-blecher]

The issue was the poppler requirement which is hard to install. I'll merge the related PR (#173) as soon as I can.

Here is a related thread:
#96 (comment)