sega_beena_cart.xml: Put page scans in individual data areas.
frontend/mame/luaengine_mem.cpp: Added a raw read function for memory
regions.
plugins/layout: Added bitmap classes to layout sandbox.
* docs: Added option for Wayland support to compiling guide.
* docs: Clarified behaviour of memory region read/write methods.
* Fixed some editing errors in Turkish UI translation.
* Added some parentheses on ternary conditional operators for clarity.
Also corrected some copy/paste errors in documentation, and bumped
documentation version as it now describes features that will appear in
an upcoming release.
