CHANGELOG: Add upcoming changes

Signed-off-by: caleb <[email protected]>

CHANGELOG.md

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+# Changelog
+
+### - Zune: (Changes affecting all formats)
+
+- Changed from requiring `&[u8]` for decoders into anything that
+  implements `ZReaderTrait`.
+  This means that for all formats it's a breaking change, it is still recommended to use `&[u8]` for
+  reading, but one can now implement any type of reader (even async, not recommended)
+- Log levels reduced to trace
+
+### - zune-bmp
+
+- New decoder, fast as usual, benchmarks will be added.
+- Supports almost all types of bmp in [bmpsuite](https://entropymine.com/jason/bmpsuite/bmpsuite/html/bmpsuite.html)(two
+  are failing now)
+- Fuzz tested (but needs some more testing before full release)
+
+### - zune-hdr
+
+- New decoder and encoder dropped
+- Decoder is about 2.7X faster than image-rs/hdr decoder(benchmarks in repo, reproducable
+  by `cargo bench --workspace "hdr"`)
+- Encoder is also fast.
+
+#### zune-jpeg
+
+- merge Arm changes, arm decode got a bit faster
+-
+
+### zune-jpegxl
+
+- Make it compile in `no-std` environments, this looses the threading capabilities (threads require std)
+
+### zune-png
+
+- Add ability to decode Animated PNG. (one can extract frames but not blend them)
+-