update todos
Rename MemRange to Range

just for fun
indent fix

from last rename
add native visualizer for Range<char>

drop it in C:\Users\<user>\Documents\Visual Studio 2013\Visualizers
combine tokenize and file loading

cleans things up, prep for better exceptions

Also added file IO catch in the right place that covers all loadings.
overhaul tokenizer exception

Now with the path.
fail

tried to add a unittest via the wizard. It backfired but now I have the
sln changed by the ide. Oh well.