CHANGES

Pre-release:
    - Added full Windows support for pystaq

Version 2.1 - 17 January 2022
    - Added pystaq, a Python wrapper around staq. See
      https://github.com/softwareQinc/staq/wiki/pystaq for more details.
    - Due to phase discrepancies, by default the parser now uses Qiskit
      definitions (which are also the usual ones used in QC textbooks). To
      switch to standard OpenQASM 2.0 gate definitions, configure the project
      with `cmake -DUSE_OPENQASM2_SPECS=ON`.
    - When building with CMake, the new STAQ_VERSION_NUM (numeric) and
      STAQ_VERSION_STR (string) preprocessor definitions are automatically
      injected in the code

Version 2.0 - 5 October 2021
    - Decoupled the OpenQASM parser from the main codebase. A hard copy of
      qasmtools (https://github.com/softwareQinc/qasmtools) is now common to
      both staq and Quantum++, and by default uses standard OpenQASM 2.0 gate
      definitions. To switch to Qiskit definitions (which are also the usual
      ones used in QC textbooks), configure the project with
      `cmake -DUSE_QISKIT_SPECS=ON`.
    - Added CMake installation support
    - Switched continuous integration from Travis CI to CircleCI
    - CMake minimum required version bumped to 3.12 for automatic unit tests
      detection by CMake
    - Unit testing is now a separate CMake target, one needs to explicitly type
      'make unit_tests' to build the unit testing suite
    - Simplified unit testing, now one can run tests with 'ctest' or
      'make test' (after explicitly built with 'make unit_tests'). Use
      'GTEST_COLOR=1 ARGS="-V" make test' or 'GTEST_COLOR=1 ctest -V' for
      coloured verbose testing output.
    - QPU specifications (qubits, couplings, fidelities) are now stored in a
      JSON file format (https://github.com/softwareQinc/staq/tree/main/qpus).
      Added a device generator to easily create these JSON files under
      ['tools/device_generator.cpp'].

Version 1.4 - 5 December 2020
    - Bugfixes
    - Renamed 'master' branch to 'main'    

Version 1.3 - 11 June 2020
    - Bugfix release

Version 1.2 - 13 May 2020
    - Minor incremental improvements/bugfixes

Version 1.1 - 8 April 2020
    - Added complete Windows support (including MSVC) + AppVeyor CI
    - Various minor bugfixes

Version 1.0 - 10 December 2019
    - Initial public release