Since the Deck* family of classes have changed their interfaces to no
longer use shared_ptr, a lot of code broke. This patch fixes all
problems in tests, other signatures and accesses to now use the new Deck
interfaces.
Most tables are trivial extensions of SimpleTable, but had their
implementation in headers. This required them to include more headers
than we want to expose and makes them harder to maintain and verify.
Instead, all these SimpleTable derivatives are now implemented in
Tables.cpp, only declaring their interfaces in their respective .hpp
files. Clients won't notice the difference.
rebase into tables
This is an effort to improve build performance. Several includes
scattered across the project are either unused or partially used (i.e.
just used to import a type name, not depending on the actual contents of
the header file).
Replaces a lot of these includes with forward declarations.
