Fix for #174
This added a completion TooltipInformation for each overload rather than having them all munged together and then filtered.
Removed unnecessary List operation
update parser and completion logic to give better responsiveness
Merge github.com:fsharp/fsharpbinding
Added lazy eval to datatip text, removed with get() syntax
Merge pull request #221 from 7sharp9/master

Fix for #174
Adjust code to encapsulate laziness a little better