Performance improvements

A number of small bugs were fixed:

• Initialization of the explicit list of spheres when executing the standalone run_pcm executable.
• Memory leak in PEDRA when a large number of spheres is given.

Performance improvements:

• A better log from the PEDRA cavity generator.
• Faster CPCMSolver both in initialization and ASC computation.
• Faster IEFSolver both in initialization and ASC computation.

Read the change log for exhaustive information. Consult also the list of issues