4.2.0

Changelog:

• Implemented support for FSM4RTC (@yosuke)
• Added doctests (@yosuke)

v4.1.0

Changelog:

• Switched setup script from distutils to setuptools
• Dropped support for Python 2.6

4.0

Changelog:

• Added complete support for the ExecutionContext interface.
• Support for the Logger SDO interface.
• Support for the ComponentObserver SDO interface.
• Support three-or-more port connections.
• Deprecated Port.get_connection_by_dest()
• Added Port.get_connections_by_dest()
• Added Port.get_connections_by_dests()
• Fixed a bug where finding a connection with a given destination would return
  all connections on the port.

v3.0.1

Compatibility release for rtshell-3.0.1