We build too many walls and not enough bridges

CONTRIBUTING.md

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+# Contribution Policy
+
+By making a contribution to this project:
+
+1.  I assign any and all copyright related to the contribution to
+    Proton Technologies AG;
+2.  I certify that the contribution was created in whole by me;
+3.  I understand and agree that this project and the contribution are public
+    and that a record of the contribution (including all personal information I
+    submit with it) is maintained indefinitely and may be redistributed with
+    this project or the open source license(s) involved.