v2.1.9

What's Changed

• [2.1] Fix overflow in MemoryAllocator.Create(options) by @antonfirsov in #2732
• Backport GIF LZW fix to 2.1 by @antonfirsov in #2756
• Backport 2759 to 2.1.x by @antonfirsov in #2770

Full Changelog: v2.1.8...v2.1.9