pymodbus v3.6.4

• Update datastore_simulator example with client (#1967)
• Test and correct receiving more than one packet (#1965)
• Remove unused FifoTransactionManager. (#1966)
• Always set exclusive serial port access. (#1964)
• Add server/client network stub, to allow test of network packets. (#1963)
• Combine conftest to a central file (#1962)
• Call on_reconnect_callback. (#1959)
• Readd ModbusBaseClient to external API.
• Update README.rst
• minor fix for typo and consistency (#1946)
• More coverage. (#1947)
• Client coverage 100%. (#1943)
• Run coverage in CI with % check of coverage. (#1945)
• transport 100% coverage. (#1941)
• contrib example: TCP drainage simulator with two devices (#1936)
• Remove "pragma no cover". (#1935)
• transport_serial -> serialtransport. (#1933)
• Fix behavior after Exception response (#1931)
• Correct expected length for udp sync client. (#1930)