ICO support and ability to use cursors instead of raw buffers

Thanks to those who submitted PRs to make this release!

For this release the main changes are the following:

• ICO support was added. By default ICO will use the largest size found as the dimensions returned.
• A new method reader_size has been added which allows getting dimensions from anything implementing BufRead + Seek.

What's Changed

• Add support for ICO by @P1n3appl3 in #17
• Add reader_size by @kailes in #18

New Contributors

• @P1n3appl3 made their first contribution in #17
• @kailes made their first contribution in #18

Full Changelog: v0.9.0...v0.10.0