Pyinduct

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Bugfixes:

* Problem with nan values in EvalData
* Activation of numpy strict mode in normal operation
* Comparison warnings in various places
* Issues with evaluation of ComposedFunctionVector
* Errors in evaluate_approximation with CompoundFunctionVectors
* Deprecation warnings in visualization code
* Broken default color scheme now uses matplotlib defaults
* Corner cases for evaluate approximation
* Made EvalData robust against NaN values in int output data array
* Index error in animation handler of SurfacePlot
* Added support for nan values in SurfacePlot
* Removed strict type check to supply different systems for simulation
* Added correct handling an NaN to spline interpolator of EvalData
* Several issues in PgSurfacePlot
* Introduced fill value for EvalData objects
* Deactivated SplineInterpolator due to bad performance
* Cleanup in SWM example tests
* Suppressed plots in examples for global test run
* Complete weak formulation test case for swm example
* Updated test command since call via setup.py got deprecated

CI related changes:

* Solved issues with screen buffer
* restructured test suite
* test now run on the installed package instead of the source tree
* updated rtd config to enable building the documentation again

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Features:

* Unification of `cure_interval` which can now be called directly as static
* Added functionality to parse pure `TestFunction` products
* Added visualization of functions with noncontinuous domain
* Support for Observer Approximation via `ObserverFeedback`
* Added complete support for `ComposedFunctionVector`
* Concept of `matching` and `intermediate` bases for easier approximation handling
* Added call to clear the base registry
* Added `StackedBase` for easier handling of compound approximation bases
* Added `ConstantFunction` class
* New Example: Simulation of Euler-Bernoulli-Beam
* New Example: Coupled PDEs within a pipe-flow simulation
* New Example: Output feedback for the String-with-Mass System
* Extended Example: Output Feedback for the Reaction-Advection-Diffusion System

Changes:

* Removed former derivative order limit of two
* Deprecated use of `exponent` in `FieldVariable`
* Made `derive` of FieldVariable keyword-only to avoid error
* Extended the test suite by a great amount of cases
* Speed improvements for dot products (a846d2d)
* Refactored the control module into the feedback module to use common calls
for controller and observer design
* Improved handling and computation of transformation hints
* Made scalar product vectorization explicit and accessible
* Changed license from gpl v3 to bsd 3-clause


Bugfixes:

* Bugfix for `fill_axis` parameter of `EvalData`
* Bugfix in `find_roots` if no roots where found or asked for
* Bugfix for several errors in `visualize_roots`
* Bugfix in `_simplify_product` of `Product` where the location of
scalar_function was ignored
* Bugfix for `IntegralTerm` where limits were not checked
* Bugfix for boundary values of derivatives in `Lag2ndOrder`
* Fixed Issue concerning complex state space matrices
method on the class to be used for curing.
* A few fixes on the way to better plotting (739a70b)
* Fixed various deprecation warnings for scipy, numpy and sphinx
* Fixed bug in `Domain` constructor for degenerated case (1 point domain)
* Bugfix for derivatives of `Input`
* Bugfixes for `SimulationInput`
* Fixed typos in various docstrings

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* Version 0.4
* Change from Python2 to Python3

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* Version 0.3

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* Version 0.2

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* First Code