* Add classes for application and project
* Removed all globals from Fluid.h
* Extracting args and project history into their own classes
* Moving globals into Application class
* Initialize values inside headers for some classes.
* Undo functionality wrapped in a class inside Project.
* File reader and writer are now linked to a project.
* Avoid global project access
* Nodes (former Types) will be managed by a new Tree class.
* Removed static members (hidden globals) form Node/Fl_Type.
* Adding Tree iterator.
* Use nullptr instead of 0, NULL, or 0L
* Renamed Fl_..._Type to ..._Node, FL_OVERRIDE -> override
* Renaming ..._type to ...::prototype
* Splitting Widget Panel into multiple files.
* Moved callback code into widget panel file.
* Cleaning up Fluid_Image -> Image_asset
* Moving Fd_Snap_Action into new namespace fld::app::Snap_Action etc.
* Moved mergeback into proj folder.
* `enum ID` is now `enum class Type`.
All files: remove autoconf/configure related stuff, update links.
- README.txt: describe prerequisites, provide generic instructions
on how to use CMake to build FLTK
- test/demo.cxx: remove code used for configure/make build
- test/CMakeLists.txt: remove obsolete 'target_compile_definitions()'
New functions append "_str" to the function name to
avoid ambiguities when calling them. So
'char *fl_filename_name(const char *)' becomes
'std::string fl_filename_name_str(const std::string &)'
Note: 'FL_DOUBLE_WINDOW' *is* currently defined as 'FL_WINDOW+1'.
This commit doesn't change real code but prevents potential bugs
in the future if one of these constants would be changed.
Note: in commit a7328d940b
"FLUID: Imporving method name `can_have_children()`"
the file function_panel.cxx was edited w/o the corresponding
fluid (.fl) file.
This commit fixes this, assuming the .cxx file was correct.
- fix missing doxygen version in PDF docs created by CMake
- remove unnecessary quotes ('...') from version numbers and
Git revisions (previously added for debugging purposes)
- fix navigation links at the bottom of tutorial pages (HTML only)
- remove 'D. Gibson' from documentation headers on his request
