* Revise and simplify most enable_if statements in the project.
* Update code style in all files.
* Update copyright year.
* Add a dedicated Memory.h header with the memory device implementation.
* Update documentation.
* CMake cleanup.
This relies on a memory map implementation based on std::array and specialized
over the register size. PackedRegister can now be used with all supported
register sizes (i.e., widths).
This relates to #7 and the finalization of the API before performance testing.
