Here is a list of all files with brief descriptions:

3PosAnalog.h
config.h
config_adv.h
config_validation.h
debug_config.h
debug_utils.cpp
debug_utils.h
delay_basic.h
enums.h
features.h
ModbusBridge.cpp
ModbusBridge.h
ModbusMaster.h
ModbusRtu.h
MotorLoad.h
OmronE5.h
OmronE5_Ex.h
OmronMX2.h
OmronPID.cpp
OmronPID.h
OmronPIDModbus.cpp
OmronVFD.cpp
OmronVFD.h
OmronVFDModbus.cpp
PHApp.cpp
PHApp.h
POT.h
Relay.h
StatusLight.h
StepperController.h
utils.cpp
utils.h