Added initial implementation of GtkGrid-style Grid.
Resolved TODO about OpenFile() on GTK+ returning NULL.
Simplified Grid's code greatly, making it more correct in the process. Also renamed h/vexpand/align to x/yexpand/align for simplicity.
Added right-alignment to Grid.
Implemented Grid halign Center.
Implemented vertical alignment in Grid.
Improved Grid's documentation.
Quick typo fix.
Still more typo fixes.
Fixed empty cells in Grid not handled correctly.
Removed some debugging spiel.
Removed more debugging spiel.
Restructured the Grid allocation algorithm to split position/size assignment and neighbor assignment. This will make xspan/yspan much easier.
Rewrote the Grid implementation to handle spans.
Accidentally left Grid expand code commented out. Fixed.
Fixed errors preventing current test program from rendering new Grids correctly.
Exported xspan/yspan in Grid to the Add() function parameter list.
Set up a replacement for the new Grid test. It doesn't work, but now we can more easily fix it.
Mostly fixed Grid behavior.
Various Grid comment updates.