add links in windows
python/exceptions: Add AttributeError
Class: Add support for getattr/setattr
value: Reformat
Make python version of cache introspectable
Class: Make getattr and setattr leave existing fields alone
mesh/__init__.py: Add a steps argument to linear_subdivide
geometry/platonic: Add a grid_topology function
CubicHinges: Expose simple_hessian field to python
mesh/__init__.py: Add a loop_subdivide function
geometry/platonic: Add nicer argument checking to open_cylinder_mesh
value: Rename get_dependencies to dependencies, and change Ptr to Ref
Compute: Rename Python type to Cache to match function

We'll need to do some more name synchronization later.
python/repr: Add a PyObject* overload
value/Compute: Give python caches a nice repr
build fix for empty libs
Merge branch 'windows'
check for external redefinition
Update Ref and Ptr comparison operators to allow Ref<T> == Ref<const T> etc. and avoid reference counting overhead when comparing Ptr<T> to Ref<T>
Merge branch 'master' of github.com:otherlab/core