Change description of version numbers (WIP)

CONTRIBUTING.md

@@ -62,9 +62,9 @@ Usage of semantic versioning is recommended, which defines a version like `MAJOR
 
 Semantic versioning typically follows the following generic guidelines:
 
-- `MAJOR`: Breaking changes that are not backward compatible.
-- `MINOR`: Backward-compatible changes.
-- `PATCH`: Backward-compatible changes, typically those that do not change the database schema.
+- Different `MAJOR` versions are not compatible.
+- Different `MINOR` versions are backward-compatible.
+- Different `PATCH` versions are completely compatible.
 
 These rules would typically not be followed strictly for schema changes. For instance, some operations which are technically backward compatible, such as adding a table, should likely result in a `MAJOR` version increment rather than `MINOR`, as they constitute an important and significant update which would usually require major updates to client queries and APIs.