3.9.3

• Added cross-database support for NULLS FIRST/LAST when specifying the ordering for a query. Previously this was only supported for Postgres. Peewee will now generate an equivalent CASE statement for Sqlite and MySQL.
• Added EXCLUDED helper for referring to the EXCLUDED namespace used with INSERT...ON CONFLICT queries, when referencing values in the conflicting row data.
• Added helper method to the model Metadata class for setting the table name at run-time. Setting the Model._meta.table_name directly may have appeared to work in some situations, but could lead to subtle bugs. The new API is Model._meta.set_table_name().
• Enhanced helpers for working with Peewee interactively, see doc.
• Fix cache invalidation bug in DataSet that was originally reported on the sqlite-web project.
• New example script implementing a hexastore.

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