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- Improved support for `filter()`, `.only()`, `.order_by()` etc. on indexed properties. It is now possible to specify
labels and subfields, e.g.
`.filter(phone_numbers=PhoneNumber(label='CarPhone', phone_number='123'))`
`.filter(phone_numbers__CarPhone='123')`,
`.filter(physical_addresses__Home__street='Elm St. 123')`, .only('physical\_addresses\_\_Home\_\_street')\` etc.
- Improved performance of `.order_by()` when sorting on multiple fields.
- Implemented QueryString search. You can now filter using an EWS QueryString, e.g. `filter('subject:XXX')`