Log Message:
py-cramjam: update to 2.8.4.

TL/DR

    Add cramjam.experimental.blosc2
    Add cramjam.experimental.igzip (on 64bit targets)
    Add wasm32 emscripten build and test for pyodide

What's Changed

    Update libcramjam crate to 0.3.0 in cramjam-cli by @musicinmybrain in #152
    Add experimental blosc2 support by @milesgranger in #107
    Move sdist generations to own job by @milesgranger in #155
    Add blosc2 to CLI, libcramjam features and own CI by @milesgranger in #156
    Don't overwrite artifact on each job by @milesgranger in #157
    Prepare for release by @milesgranger in #158
    Change github release job in CI by @milesgranger in #161
    Adjust for move of libcramjam and CLI to own repos by @milesgranger in #162
    Bump libcramjam and simplify CI by @milesgranger in #163
    Bump version and fix CI artifact uploading by @milesgranger in #164
    Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows by \ 
@dependabot in #168
    Update PyO3 0.20 -> 0.22 & Python 3.13 by @milesgranger in #169
    Update upload/download-artifact actions by @milesgranger in #170
    Add more feature configuration options by @milesgranger in #174
    Fix blosc2 upgrade API changes by @milesgranger in #176
    Expose linking flexibility for xz, gzip/deflate from libcramjam by \ 
@milesgranger in #175
    Remove pypy3.9 from CI by @milesgranger in #177
    Exclude benchmarks from builds by @milesgranger in #179
    Add wasm32-emscripten builds by @milesgranger in #181
    Add experimental igzip by @milesgranger in #182