<commit_before>Changelog
=========

All notable changes to this project will be documented in this file.

The format is based on `Keep a Changelog`_.

  **Types of changes:**

  - **Added**: for new features.
  - **Changed**: for changes in existing functionality.
  - **Deprecated**: for soon-to-be removed features.
  - **Removed**: for now removed features.
  - **Fixed**: for any bug fixes.
  - **Security**: in case of vulnerabilities.


`UNRELEASED`_
=============

Added
-----
- Added decorator to check for C++ simulator availability (#662)
- It is possible to cancel jobs in non comercial backends (#687)
- Introduced new options for handling credentials (qiskitrc file, environment
  variables) and automatic registration. (#547)
- Add OpenMP parallelization for Apple builds of the cpp simulator (#698).
- New interactive visualizations (#765).
- Added option to reverse the qubit order when plotting a circuit. (#762, #786)

Changed
-------
- Renamed ``QISKit`` to ``Qiskit`` in the documentation. (#634)
- Use ``Qobj`` as the formally defined schema for sending information to the
  devices:
    - introduce the ``qiskit.qobj`` module. (#589, #655)
    - update the ``Qobj`` JSON schema. (#668, #677, #703, #709)
    - update the local simulators for accepting ``Qobj`` as input. (#667)
    - update the ``Result`` class. (#773)
- Use ``get_status_job()`` for checking IBMQJob status. (#641)
- Q network hub/group/project credentials replaced by new url format. (#740)
- ``Jobs`` API simplification and breaking changes. (#686)
- Breaking change: altered tomography APIs to not use QuantumProgram. (#818)

Removed
-------
- Removed the QuantumProgram class. (#724)

Fixed
-----
- Fixed ``get_ran_qasm`` methods on ``Result`` instances (#688)
- Fixed ``probabilities_ket`` computation in C++ simulator. (#580)<commit_msg>Adding the change to CHANGELOG<commit_after>Changelog
=========

All notable changes to this project will be documented in this file.

The format is based on `Keep a Changelog`_.

  **Types of changes:**

  - **Added**: for new features.
  - **Changed**: for changes in existing functionality.
  - **Deprecated**: for soon-to-be removed features.
  - **Removed**: for now removed features.
  - **Fixed**: for any bug fixes.
  - **Security**: in case of vulnerabilities.


`UNRELEASED`_
=============

Added
-----
- Added decorator to check for C++ simulator availability (#662)
- It is possible to cancel jobs in non comercial backends (#687)
- Introduced new options for handling credentials (qiskitrc file, environment
  variables) and automatic registration. (#547)
- Add OpenMP parallelization for Apple builds of the cpp simulator (#698).
- New interactive visualizations (#765).
- Added option to reverse the qubit order when plotting a circuit. (#762, #786)

Changed
-------
- Renamed ``QISKit`` to ``Qiskit`` in the documentation. (#634)
- Use ``Qobj`` as the formally defined schema for sending information to the
  devices:
    - introduce the ``qiskit.qobj`` module. (#589, #655)
    - update the ``Qobj`` JSON schema. (#668, #677, #703, #709)
    - update the local simulators for accepting ``Qobj`` as input. (#667)
    - update the ``Result`` class. (#773)
- Use ``get_status_job()`` for checking IBMQJob status. (#641)
- Q network hub/group/project credentials replaced by new url format. (#740)
- Breaking change: ``Jobs`` API simplification. (#686)
- Breaking change: altered tomography APIs to not use QuantumProgram. (#818)
- Breaking change: ``BaseBackend`` API changed, properties are now methods (#)

Removed
-------
- Removed the QuantumProgram class. (#724)

Fixed
-----
- Fixed ``get_ran_qasm`` methods on ``Result`` instances (#688)
- Fixed ``probabilities_ket`` computation in C++ simulator. (#580)
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