Felupe

Added
- Add cell-type argument to `Mesh.add_midpoints_volumes(cell_type=None)` and its variants for edges and faces.
- Add `element.Element.view()`, `element.Element.plot()` and `element.Element.screenshot()`. This enables an interactive plot of the element in the reference configuration with its point ids, e.g. `Hexahedron().plot().show()`.

Changed
- Change function signature and enhance `dof.biaxial(field, lefts=(None, None), rights=(None, None), moves=(0.2, 0.2), axes=(0, 1), clampes=(False, False), sym=True)`. Now with a full-featured docstring including an example.
- Change function signature and enhance `dof.shear(field, bottom=None, top=None, moves=(0.2, 0.0, 0.0), axes=(0, 1), sym=True)`. Now with a full-featured docstring including an example.
- Merge keyword-arguments for the dual-regions with hard-coded arguments in `FieldsMixed(region, **kwargs)`.
- Replace `np.product()` (will be removed in NumPy 2.0) with the equivalent `np.prod()`.

Fixed
- Fix `FieldsMixed()` for regions with MINI-element formulations: Disable the disconnection of the dual mesh.
- Fix `dof.shear(sym=True)` which was previously ignored due to a wrong setup of the symmetry boundaries.
- Fix the install command on Python 3.12 by adding an extra-index-url for VTK wheels if they are not yet available on PyPI (the extra index is provided by Kitware).
- Fix a warning because the timings of the Newton-Rhapson solver are printed from a one-dimensional array. Take the first item of the runtime-array to resolve this warning.

Deprecated
- Deprecate the old-style argument `move` in `dof.biaxial()`, which defaults to `None`.
- Deprecate the old-style arguments `move`, `axis_compression`, `axis_shear` and `compression` in `dof.shear()`, which all default to `None`.

Removed
- Remove the undocumented `dof.planar()` because this is a special case of the biaxial load case `dof.biaxial(field, clampes=(True, False), moves=(0.2, 0), sym=False, axes=(0, 1))`.

Added
- Add `ViewField` as method to a field container `FieldContainer.view()`. Now a field container provides the view sub-methods directly, i.e. add `FieldContainer.plot()` and `FieldContainer.screenshot(filename="mesh.png")`.

Changed
- Hide the undeformed mesh in `Mesh.plot()` by default (also affects `Mesh.screenshot()`).

Fixed
- Fix taking screenshots of a mesh.

Added
- Add `ViewMesh` as method to a mesh `Mesh.view()`. Now a mesh provides the view sub-methods directly, i.e. add `Mesh.plot()` and `Mesh.screenshot(filename="mesh.png")`.

Added
- Add `mesh.Triangle(a, b, c, n=2)` for the creation of a quad-meshed triangle.

Changed
- Change `mesh.Circle(n=6)` to the minimum `mesh.Circle(n=2)`.
- Enhance `dof.uniaxial(axis=0, sym=(False, True, False))` by a user-defined axis and selective symmetries.
- Enhance `dof.shear(axis_compression=1, axis_shear=0, sym=True)` by user-defined axes of compression and shear.

Fixed
- Fix `mesh.concatenate([mesh])` for a list of length one by enforcing the dtype of the offset as integer.

Added
- Add optional normalization of mesh runouts (which are then indents) by `mesh.runouts(normalize=False)`.
- Add `LinearElasticLargeStrain(E=None, nu=None, parallel=False)`, suitable for large-rotation analyses. This is based on `NeoHooke()` with converted Lamé-constants.
- Add a simple boundary-based quad- or hex mesher: A mesh tool for filling the face or volume between two line- or quad-meshes `mesh.fill_between(mesh, other_mesh, n=11)`.
- Add `Circle(radius, centerpoint, n)` for the creation of a quad-meshed circle.

Changed
- Update the mesh also with a new points array: this changes the Mesh-update function `mesh.update(cells, cell_type=None)` to `mesh.update(points=None, cells=None, cell_type=None)`. Note that this could break old scripts which use `mesh.update(new_cells)` instead of `mesh.update(cells=new_cells)`.
- Move the copy-method of a Mesh `Mesh.copy()` to its base-class and extend it to optionally update the attributes `DiscreteGeometry.copy(points=None, cells=None, cell_type=None)`.

Removed
- Remove tests on Python 3.7 (end of life).

Changed
- Start a virtual framebuffer in Jupyter notebook plotting of `View.plot(notebook=True)`. Note: Requires `sudo apt-get install xvfb`.