Changes in version 2.1.3:

• Bug fix for mpz().is_prime()
• Add support for powmod_sec()
• Add bit_count() for compatibility with Python 3.10+
• Fix mpfr('inf') and mpfr('nan') when subnormalization is enabled
• Allow powmod() and powmod_sec() to release the GIL
• Explicitly link against libm except on Windows
• Fix incorrect conversion in gmpy2_convert_utils/GMPy_Integer_AsUnsignedLongWithType
• Fix error messages for iroot(x,n) for large n
• Add powmod_list() to compute powmod on a list with a single GIL release
• Fix gmp2y.mpq(mpq, int), issue 334
• Fix docstring typos
• Fix get_context(ctx) in mpc.rst
• Fix conversion of -0 when subnormalize is True
• Add powmod_exp_list() to compute powmod on a list of exponents with a single GIL release
• Rename powmod_list to powermod_base_list