[BUG] Trajectory.read_configuration_variable method does not exist

[MBartkowiakSTFC]

Description of the error Trajectory.read_configuration_variable method is called in three source code files:

• DensityOfStates.py
• Temperature.py
• VelocityAutoCorrelationFunction.py

However, it is not defined anywhere in the source code of MDANSE.

Describe the actual result This will crash the code if a user tries to run an analysis without interpolating velocities.

Suggested fix It is possible that the method that was meant there is Trajectory.read_configuration_trajectory.

In the first step, try to replace the read_configuration_variable with read_configuration_trajectory, and check how the results compare to those with interpolated velocities.

Additional details N/A

[MBartkowiakSTFC]

This has been fixed.