v0.15.0

What's Changed

• Fix size reader for ktx2 and the test case, original code always retu… by @AllenDang in #46
• Support astc/eac/etc2/pvrtc formats by @AllenDang in #47
• Continue processing AVIF size after hitting mdat tag by @Roughsketch in #50

Full Changelog: v0.14.0...v0.15.0