v0.6.7

• [NEW]: Upgrade to Cython 3.1.3

• [FIX]: Include .pxd files in the source .tar.gz

• [FIX]: Don't require pip, it's not needed

• [FIX]: Add back some import compat for backtrader

v0.6.6

• [FIX]: Silence project.license warnings when building.

• [FIX]: Fix regression in abstract function parameters not coercing integers

v0.6.5

• [FIX]: Support PEP-517 style installation

• [NEW]: Upgrade to Cython 3.1.2

• [NEW]: Build binary wheels for Windows, macOS, and Linux.