update version to 0.47rc4

Shlomi Kushchi · web-flow · commit 97be1f8b1621 · 2020-05-05T06:55:22.000+03:00
diff --git a/alpaca_trade_api/__init__.py b/alpaca_trade_api/__init__.py
@@ -1,4 +1,4 @@
 from .rest import REST  # noqa
 from .stream2 import StreamConn  # noqa
 
-__version__ = '0.47rc3'
+__version__ = '0.47rc4'
