Changelog:
==============
- Use a faster library to serialize float. Users with byte-exact regression
tests should note positive exponents are now written using a +, e.g.,
1.2e+30 instead of 1.2e30. Both formats are spec-compliant.
- ABI compatibility with CPython 3.15 alpha 5 free-threading.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
