Fhirpath

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- Nothing changed yet.

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Improvement

- ``BundleWrapper`` is providing two optional methods, ``calculate_fhir_base_url`` and ``resolve_absolute_uri`` and is now also taking optional parameter ``base_url``.


Fixes
- fixes ``ElasticSearchDialect.create_term`` [Kartik Sayani]

- fixes ``EngineResult.extract_references``. [Jason Paumier]

- fixes how composite search params are parsed. [Jason Paumier]

- Issue28 `Nested GroupTerm search returns no matches <https://github.com/nazrulworld/fhirpath/issues/28>`_

- fixes ``SearchContext.normalize_param`` for composite search params [nazrulworld]

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- fixes ``FHIRAbstractModel`` comparing at ``utils`` module for BundleWrapper.

- ``fallback_callable`` helper function is available at ``utils`` module.

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Improvements

- More helper functions (``get_local_timezone``, ``timestamp_utc``, ``timestamp_utc``) are created.

- ``initial_bundle_data`` method is now available in Base Elasticsearch engine class,
meaning that it is possible construct Bundle initial data into the derived class, so more flexibility.

Bugfixes

- Default bundle initial data was constructed ``meta.lastUpdated`` value with utc now time but without timezone offset, so
during json serialization, timezone info was missed as a result reverse construct of Bundle complains validation error.

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Improvements

- ``orjson`` is no longer required. ``json_dumps`` and ``json_loads`` now dynamically supports
orjson and simplejson.

-------------------

Bugfixes

- ``Connection.raw_connection`` was wrongly wrapped by ``AsyncElasticsearchConnection/ElasticsearchConnection.from_url()`` with self, instead of ``elasticsearch.AsyncElasticsearch/elasticsearch.Elasticsearch``'s instance.