gtkDcoding Blog Post for 2019-03-29 - Grid

[Ron Tarrant]

On Saturday, 30 March 2019 at 10:19:15 UTC, number wrote:
> The first link in the blog post to '..the last blog post' links 
> to the 0022 article itself, not to a previous one.

Corrected.

> BTW, it compiles fine without 'import gtk.c.types', too.
> Main.d (and maybe others) contains a 'public  import 
> gtk.c.types;'

Thanks for catching that. I've made the following changes:
- removed all import gtk.c.types statements,
- added a comment below the import statement block stating which 
flags are brought in from c.types,
- rewrote all coverage of examples to reflect the above points.