## Summary of Changes
Do not include `Exact_predicates_inexact_constructions_kernel.h` and
`Simple_cartesian.h`.
Change order of `#include` statements so that the T2 files come first.
Forward declare `Epick` in `Constrained_triangulation_plus_2` where it
is used for defining a `Default` for the template parameter (which is
not documented).
## Release Management
* Affected package(s): Triangulation_2
* License and copyright ownership: unchanged.
