Adding a time step for collisions

A new option has been added in which MCC are computed with its own time
step.

If no time is provided, then the minimum time step of the simulation is
employed.

src/modules/mesh/inout/0D/moduleMeshOutput0D.f90

@@ -42,7 +42,7 @@ MODULE moduleMeshOutput0D
       USE moduleOutput
       IMPLICIT NONE
 
-      CLASS(meshGeneric), INTENT(in):: self
+      CLASS(meshGeneric), INTENT(inout):: self
       INTEGER, INTENT(in):: t
       CHARACTER(:), ALLOCATABLE:: fileName
 
@@ -56,7 +56,7 @@ MODULE moduleMeshOutput0D
       END IF
       
       OPEN(20, file = path // folder // '/' // fileName, position = 'append', action = 'write')
-      WRITE(20, "(ES20.6E3, I20)") REAL(t)*tauMin*ti_ref, mesh%vols(1)%obj%nColl
+      WRITE(20, "(ES20.6E3, I20)") REAL(t)*tauMin*ti_ref, self%vols(1)%obj%nColl
       CLOSE(20)
 
     END SUBROUTINE printColl0D

src/modules/mesh/inout/gmsh2/moduleMeshOutputGmsh2.f90

@@ -95,7 +95,7 @@ MODULE moduleMeshOutputGmsh2
       USE moduleOutput
       IMPLICIT NONE
 
-      CLASS(meshGeneric), INTENT(in):: self
+      CLASS(meshGeneric), INTENT(inout):: self
       INTEGER, INTENT(in):: t
       INTEGER:: numEdges
       INTEGER:: n