Changes:
- Use unique hashes to avoid form clashes (using md5).
- Remove the ' Id' at the end in the column names for display.
- Replace `engine` (sql Alchemy) by the `st.connection` for
StreamlitAlchemyMixin initialization.
- Remove the border from the forms (requires `streamlit>=1.29.0`)
- `st.rerun` on `st_update_select_forms` as well as on
`st_delete_select_form`.
- Add support for boolean Columns - using selectbox to allow None
as possible value.
- Pass `kwargs` from `st_*_button` to `st.button`.
