Re-root site.

site/app.yaml

@@ -0,0 +1,46 @@
+# Copyright 2021 Bradley D. Nelson
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+runtime: go115
+
+default_expiration: "1m"
+
+handlers:
+- url: /robots.txt
+  static_files: static/robots.txt
+  upload: static/robots.txt
+  secure: always
+
+- url: /favicon(.*)
+  static_files: static/favicon\1
+  upload: static/favicon.*
+  secure: always
+
+- url: /
+  static_files: index.html
+  upload: index.html
+  secure: always
+
+- url: /(.*).html
+  static_files: \1.html
+  upload: (.*).html
+  secure: always
+
+- url: /static
+  static_dir: static
+  secure: always
+
+- url: /.*
+  script: auto
+  secure: always