Fix unit tests (#993)

pynecone/el/precompile.py

@@ -94,7 +94,7 @@ INIT_PY = [
     "from typing import Union",
     "",
     "from pynecone.el.element import Element",
-    "from pynecone.var import Var as PCVar",
+    "from pynecone.vars import Var as PCVar",
     "",
 ]
 

pynecone/utils/__init__.py

@@ -0,0 +1 @@
+"""Pynecone utiiities."""

tests/test_app.py

@@ -13,7 +13,7 @@ from pynecone.middleware import HydrateMiddleware
 from pynecone.state import State, StateUpdate
 from pynecone.style import Style
 from pynecone.utils import format
-from pynecone.var import ComputedVar
+from pynecone.vars import ComputedVar
 
 
 @pytest.fixture