Blosc2 v4.0.0

What's Changed

The main change is hyperfast fully multithreaded computation with miniexpr (final PR * Miniexpr for Windows by @FrancescAlted in #565).
In addition, the internal wheel structure has been changed to implement PEP 427 (@lshaw8317 in #560). In addition:

• feat: add support for .b2z, .b2d, .b2e files and update related tests by @bossbeagle1509 in #541
• Add none indexing for lazyudf/lazyarray by @lshaw8317 in #545
• Respect NUMEXPR_MAX_THREADS when setting numexpr thread count by @skmendez in #567
• Add openzl_plugin support by @lshaw8317 in #559

Full Changelog: v3.12.2...v4.0.0