- interface for rigid-body and structural dynamics added (rigid body to be tested). This affected:
	+ fwd_main_prealloc.f90
	+ opt_routine.f90
	+ opt_routine_test.f90


- Python interface for dynamic input:
	+ xbcomponent.py: new input/output added and fortran interface updated
	+ forcedvel.py
	+ dynamic.load.py: methods to define external applied loads
	+ read.py/save.py updated


Minor:
- cbeam_solv.f90: correct print instructions
- added titanium properties:
	+ isosec.f90
	+ isosec.py
- lib.postpr.py module added