Qupulse

- General:
- Introduce qupulse.utils.isclose (an alias for math.isclose if available)
- Dropped support for Python 3.4 in setup.py due to incompatible syntax in qupulse.
- Official support for Python 3.7 has begun.

- Pulse Templates:
- `AtomicMultichannelPulseTemplate`:
- Add duration keyword argument & example (see MultiChannelTemplates notebook)
- Make duration equality check approximate (numeric tolerance)
- Plotting:
- Add `time_slice` keyword argument to render() and plot()
- Add `AbstractPulseTemplate` class
- `PointPulseTemplate`:
- Fixed bug in integral evaluation
- Add `ParallelConstantChannelPulseTemplate` which allows adding a constant valued channel to an arbitrary pulse template

- Expressions:
- Make ExpressionScalar hashable
- Fix bug that prevented evaluation of expressions containing some special functions (`erfc`, `factorial`, etc.)

- Parameters:
- `ConstantParameter` now accepts a `Expression` without free variables as value (given as `Expression` or string)

Also available on [PyPi](https://pypi.org/project/qupulse/0.3/)

- General:

- officially removed support for Python 3.3 (qupulse and dependencies are not compatible anymore)

- Serialization / Storage:

- Added functionality to easily access available content/identifiers in `PulseStorage` and `StorageBackend`.
- DEPRECATED `list_contents()` of `StorageBackend` (use `contents property` instead).
- DEPRECATED: `CachingBackend` because its functionality is a subset of `PulseStorage`.

- Expressions:
- Fixed bug in `Expression.evaluate_numeric` if result is array of numeric sympy objects

Also available on [PyPi](https://pypi.org/project/qupulse/0.2/)

Also available via pypi