Support Python 3.13 and PostgreSQL 17.

Improvements

Implement GSSAPI authentication (by @eltoder in 1d4e5680 for #1122)
Implement SSPI authentication (by @eltoder in 1aab2094 for #1128)
Add initial typings (by @bryanforbes in d42432bf for #1127)
Allow building with Cython 3 (by @musicinmybrain in 258d8a95 for #1101)
docs: fix connection pool close call (#1125) (by @paulovitorweb in e8488149 for #1125)
Add support for the sslnegotiation parameter (by @elprans in afdb05c7 for #1187)
Test and build on Python 3.13 (by @elprans in 3aa98944 for #1188)
Support PostgreSQL 17 (by @elprans in cee97e1a for #1189) (by @MeggyCal in aa2d0e69 for #1185)
Add fetchmany to execute many and return rows (by @rossmacarthur in 73f2209d for #1175)
Add connect kwarg to Pool to better support GCP's CloudSQL (by @d1manson in 3ee19baa for #1170)
Allow customizing connection state reset (#1191) (by @elprans in f6ec755c for #1191)

Fixes

s/quote/quote_plus/ in the note about DSN part quoting (by @elprans in 1194a8a6 for #1151)
Use asyncio.run() instead of run_until_complete() (by @eltoder in 9fcddfc1 for #1140)
Require async_timeout for python < 3.11 (#1177) (by @Pliner in 327f2a7a for #1177)
Allow testing with uvloop on Python 3.12 (#1182) (by @musicinmybrain in 597fe541 for #1182)
Mark pool-wrapped connection coroutine methods as coroutines (by @elprans in 636420b1 for #1134)
handle None parameters in copy_from_query, returning NULL (by @fobispotc in 259d16e5 for #1180)
fix: return the pool from _async_init__ if it's already initialized (#1104) (by @guacs in 7dc58728 for #1104)
Replace obsolete, unsafe Py_TRASHCAN_SAFE_BEGIN/END (#1150) (by @musicinmybrain in 11101c6e for #1150)