added zouhar contact

(cherry picked from commit 3aee677)

Author: ChRen95

pyroll/basic.py

@@ -16,6 +16,7 @@
 import pyroll.hensel_power_and_labour as hensel_power_and_labour
 import pyroll.wusatowski_spreading as wusatowski_spreading
 import pyroll.lendl_equivalent_method as lendl_equivalent_method
+import pyroll.zouhar_contact as zouhar_contact
 
 import pyroll.report as report
 import pyroll.export as export