introduced a dynamic completion for params

test/completion/dynamic.py

@@ -0,0 +1,14 @@
+"""
+This is used for dynamic object completion.
+Jedi tries to guess the types with a backtracking approach.
+"""
+def func(a):
+    #? int() str()
+    return a
+
+#? int()
+func(1)
+
+func
+
+int(1) + (int(2))+ func('')