Empymod

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

**2020-02-16**

- New examples:

- ``empymod`` can handle positive z down- or upwards (left-handed or
right-handed coordinate systems; it was always possible, but not known nor
documented). Adjusted documentation, docstrings, and added an example.
- Example how to calculate the responses for the WalkTEM system.

- Minor things and bug fixes:

- Change from relative to absolute imports.
- Simplified releasing (no badges).
- Python 3.8 is tested.
- Fix: numpy now throws an error if the third argument of ``logspace`` is not
an ``int``, some casting was therefore necessary within the code.

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**2019-11-11**

- Move examples to an integrated Sphinx-Gallery, generated each time.
- Move from conda-channel ``prisae`` to ``conda-forge``.
- Automatic deploy for PyPi and conda-forge.

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**2019-11-06**

- Simplified and improved ``empymod.utils.EMArray``. Now every returned array
from the main modelling routines ``bipole``, ``dipole``, ``loop``, and
``analytical`` is an EMArray with ``.amp``- and ``.pha``-attributes.
- Theme and documentation reworked, to be more streamlined with ``emg3d`` (for
easier long-term maintenance).
- Travis now checks all the url's in the documentation, so there should be no
broken links down the road. (Check is allowed to fail, it is visual QC.)
- Fixes to the ``setuptools_scm``-implementation (``MANIFEST.in``).
- ``ROADMAP.rst`` moved to GitHub-Projects; ``MAINTENANCE.rst`` included in
manual.

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

**2019-10-22**

- Typos from v1.10.0; update example in ``model.loop``.
- Implement ``setuptools_scm`` for versioning (adds git hashes for
dev-versions).

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

**2019-10-15**

- New modelling routine ``model.loop`` to model the electromagnetic frequency-
or time-domain field due to an arbitrary rotated, magnetic source consisting
of an electric loop, measured by arbitrary rotated, finite electric or
magnetic bipole receivers or arbitrary rotated magnetic receivers consisting
of electric loops.
- Move copyright from «Dieter Werthmüller» to «The empymod Developers», to be
more inclusive and open the project for new contributors.


v1.9.x
"""""""

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

**2019-10-04**

- Laplace-domain calculation: By providing a negative ``freq``-value, the
calculation is carried out in the real Laplace domain ``s = freq`` instead of
the complex frequency domain ``s = 2i*pi*freq``.
- Improvements to filter design and handling:

- ``DigitalFilter`` now takes an argument (list of strings) for additional
coefficients to the default ``j0``, ``j1``, ``sin``, and ``cos``.
- ``fdesign`` can now be used with any name as attribute you want to describe
the transform pair (until now it had to be either ``j0``, ``j1``, ``j2``,
``sin``, or ``cos``).
- The provided sine and cosine transform pairs in ``fdesign`` can now be
asked to return the inverse pair (time to frequency).

- Other tiny improvements and bug fixes.


v1.8.x
""""""