Energyquantified

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**Improvements**

- Add new area Kosovo (``Area.XK``) with these borders:
- XK–AL Explicit
- XK–ME Explicit
- XK–MK Explicit
- Add new border:
- NO2–GB Explicit
- Changes in capacity allocation for these borders:
- IT-Sud–GR Implict and Explicit
- BG–GR Implict and Explicit
- PL–DE Implict and Explicit
- PL–SK Implict and Explicit
- PL–CZ Implict and Explicit
- DE–CZ Implict and Explicit
- AT–CZ Implict
- AT–HU Implict
- GB–FR Explicit
- GB–BE Explicit
- GB–NL Explicit
- Remove border:
- RS–AL

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**Improvements**

- Add ``ContractPeriod.WEEKEND`` for OHLC data.

**Bugfixes**

- Fix crashes in ``Border.__str__`` and ``Border.__repr__`` due to missing
implementations of ``__lt__`` and ``__gt__`` in class ``Allocation``
(thanks to stanton119).

---

A release with lots of small improvements.

**Improvements**

- Add borders and parent-child relationships for the Italian price zone
Calabria. The price zone has been in the client for a while, but haven't
placed in the exchange neighbour list for the other price zones in Italy
until now.
- Add the new parameter ``single_level_header`` to all ``to_dataframe()``
methods. By default, the ``to_dataframe()``-method will create
``pandas.DataFrame`` objects with three column headers. When
``single_level_header=True``, the client will merge all three levels into
one header. The parameter defaults to ``False`` (to not break the old
behaviour).
- Remove the parameter ``hhv_to_lhv`` for all SRMC API operations.
- Add a new class ``RealtoConnection``. This class is a drop-in replacement
for the ``EnergyQuantified``-class. It lets Realto users connect to
the Energy Quantified's API on Realto's marketplace.
- Update the documentation on how to authenticate for Realto users.
- Add a quickstart chapter for Realto users.
- Add a section in the pandas documentation on the effects of setting the
``single_level_header`` parameter to ``True`` in ``to_dataframe()``.
- Add documentation on the ``fill`` parameter in
``eq.ohlc.load_delivery_as_timeseries()`` and
``eq.ohlc.load_front_as_timeseries()``.
- Other minor improvements in the documentation.

**Breaking change**

- Remove the HHV-to-LHV option for gas in the SRMC API.

**Bugfixes**

- Slashes (/) weren't escaped in curve names in the URL. While this didn't
cause issues for Energy Quantified's API, it caused an issue while
integrating the client with Realto's marketplace.

**Dependencies**

- Upgrade ``requests`` to v2.25.1.

---

Introducing support for short-run marginal cost (SRMC) calculations from
OHLC data.

**Improvements**

- Add ``OhlcAPIlatest_as_periods()`` method for generating a "forward curve"
from all closing prices in a market.
- Add ``fill`` parameter to ``OhlcAPIload_front_as_timeseries()`` and
``OhlcAPIload_front_as_timeseries()``.
- Add ``SRMC`` and ``SRMCOptions`` data classes.
- Implement the SRMC API: ``load_front()``, ``load_delivery()``,
``load_front_as_timeseries()``, ``load_delivery_as_timeseries()``,
``latest()``, and ``latest_as_periods()``.
- Add section in the OHLC documentation on how to load "forward curves".
- Add new chapter on SRMC in the documentation.

**Bugfixes**

- Fix a crash in the ``Contract`` JSON parser that occured only for SRMC
operations.

**Dependencies**

- Upgrade ``requests`` to v2.25.0.

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**Improvements**

- Update border configurations (such as the AELGrO cable between Belgium
and Germany, for instance).

**Bugfixes**

- Add missing area (SEM).

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**Bugfixes**

- Fix a crash in ``TimeseriesListto_dataframe()``.