Release v3.3.0

Binary and source releases for mimalloc.

• v3: recommended: latest mimalloc design that tends to use less memory then v2 but should perform similarly.
• v2: stable: most widely used.
• v1: legacy.

Notes:

• Release versions follow the v3 version (and v1 and v2 versions are incremented independently).
• Generally it is recommended to download sources (or use vcpkg etc.) and build mimalloc as
  part of your project.
• Source releases can also be downloaded directly from github by the tag.
  For example https://github.com/microsoft/mimalloc/archive/v3.3.0.tar.gz.
• Binary releases include a release-, debug-, and secure build.
• Linux binaries are built on Ubuntu 22.