Rayoptics

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Switch to use of strings for :class:`~.optical.model_enums.DecenterType` and :class:`~.optical.model_enums.DimensionType`. Use of the types is now deprecated. Add listobj() methods to all :mod:`~.elem.profiles` classes that lists all of the data for each profile type. Completed the fix of `opticalglass` issue 5 by using `difflib` to find better matches; seems to almost eliminate need for .smx files. Provided an alternative replacement glass spec for .smx files that requires just the glass and catalog names. Miscellaneous other fixes.

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Add :class:`~.elem.parttree.PartTree` to :class:`~.optical.opticalmodel.OpticalModel`. Many changes to get SequentialModel, ElementModel and PartTree to work in sync. Add :class:`~.elem.elements.CementedElement` element to :mod:`~.elem.elements` module. Fix paraxial image distance calculation. Fix DOE implementation for DOE on exiting side of element. Add fractional field height specification to :class:`~.raytr.opticalspec.FieldSpec`. Add a mapping interface to :class:`~.optical.opticalmodel.OpticalModel` and :class:`~.raytr.opticalspec.OpticalSpecs`; allows submodel access like opm['sm'] and opm['osp]['fov']. Add :meth:`~.seq.sequential.SequentialModel.reverse_path` method to facilitate reverse ray tracing through the model. Add semi-diameter to list of items in :meth:`~.seq.sequential.SequentialModel.add_surface` method. Add exception handling for ray trace errors in :mod:`~.raytr.analyses` module. Many miscellaneous fixes and improvements.

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Fixes for ray normal calculation in Even and Radial polynomial profiles, the ray trace was incorrect for these surfaces. Add do_aperture flag to :class:`~.seq.sequential.SequentialModel` to control aperture setting by :meth:`~.seq.sequential.SequentialModel.update_model`. Miscellaneous other fixes and enhancements.

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Rework :mod:`~.mpl.analysisfigure` module to better separate axis vs figure functions. Simplify default layout options, but support more complicated layouts as needed. Correctly update the model when dropping a glass onto the |ybar| diagram. Fix issue 18 and update documentation.

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Fixes for aspheric ray intersection calculation, implemented by reworking the :mod:`~.elem.profiles` module. Generalize the :func:`~.elem.elements.create_mirror` fct to accept a :class:`~.elem.profiles.SurfaceProfile` instance in addition.

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Fixes for .zmx import. Refactor GlassHandler to allow CODEV import to use as well.