Fix issue with verbosity level consistency

Changed Print.show to be coherent with verbosity level definition.
Print.show showed messages at all levels except quiet when according to
definition it should have printed messages only in verbose mode.

pyss3/util.py

@@ -338,7 +338,7 @@ def info(msg, newln=True, offset=0, decorator=True, force_show=False):
             )
 
     @staticmethod
-    def show(msg='', newln=True, offset=0):
+    def show(msg='', newln=True, offset=0, force_show=False):
         """
         Print a message.
 
@@ -349,7 +349,7 @@ def show(msg='', newln=True, offset=0):
         :param offset: shift the message to the right (``offset`` characters)
         :type offset: int
         """
-        if not Print.is_quiet():
+        if Print.is_verbose() or force_show:
             print((" " * offset) + str(msg), end='\n' if newln else '')
 
     @staticmethod