features:

• python 3.14 support
• catching up with many older 3.x features (see below)
• move to conan2, pcre2 (paul boddie)
• made build --conan option default under windows
• add new 'advanced 3d software renderer' example (softrender)
• drop setup.py
• many missing tests added
• improve internal stats module (shakeeb alireeza)
• move to c++20

builtin additions:

• list.clear (folkert van heusden)
• list.copy
• bytesarray.resize
• int.bit_length, {int, float, complex}.from_number, {int,float}.is_integer
• map(strict)
• support | and |= dict operators
• support super() syntax
• {str,bytes}.{removesuffix, removeprefix, hex, fromhex}
• support __bool__ rather than __nonzero__

standard module additions:

• base64 (except 16, 32, 85 variants)
• math.{tau, inf, nan, gcd, lcm, perm, comb, isqrt, cbrt, log2, exp2, isfinite, prod, fma, isclose, dist, sumprod}
• bisect key argument
• fnmatch.filterfalse
• random.{randbytes,binomialvariate, choices} (no weights)
• collections.deque.{count, index, reverse, copy, insert} (no maxlen)

bug fixes:

• many fixes triggered by earlier test refactoring by shakeeb alireeza
• improve color support under windows (wyatt carpenter)
• math.{ceil,floor} return int since python3
• fix dict iteration hang in some cases
• io.readlines issue
• fix re module argument names (so passing as keyword works)
• some fixes for binascii module
• some fixes for {str, bytes}.{split, rsplit}

optimizations:

• [.. for .. in range(constant)]
• reserve internal space for list comprehensions, to try and avoid repeated heap allocations
• bytearray[:] = bytes/bytearray object
• <int> in range(..)