Use release candidate of icetea because not yet real release available

Olli-Pekka Puolitaival · Olli-Pekka Puolitaival · commit 6568fe9351ba · 2018-08-17T12:49:45.000+03:00
diff --git a/requirements.txt b/requirements.txt
@@ -15,4 +15,4 @@ pyelftools>=0.24
 jsonschema>=2.6
 future>=0.16.0
 six>=1.11.0
-icetea==1.0.*
+icetea==1.0.0rc3
