Bump to v0.13.4

lululxvi · lululxvi · commit f5b7caa25fab · 2021-08-19T23:32:20.000-04:00
diff --git a/deepxde/__about__.py b/deepxde/__about__.py
@@ -1 +1 @@
-__version__ = "0.13.3"
+__version__ = "0.13.4"
