Delimit code after progress_bar example

pycrystfel/bindings.pyx

@@ -11,6 +11,10 @@ from . cimport crystfel
 def progress_bar(val, total, text):
     crystfel.progress_bar(val, total, text.encode())
 
+
+# --------------------------------------------------------------------------
+
+
 def inspect_geom_file(path):
     cdef crystfel.detector *det
     cdef crystfel.beam_params beam

pycrystfel/crystfel.pxd

 cdef extern from "crystfel/utils.h":
   void progress_bar(int val, int total, const char *text)
 
+
+# --------------------------------------------------------------------------
+
+
 cdef extern from "crystfel/crystal.h":
   ctypedef struct Crystal:
     pass    # Opaque struct, used through functions