This is needed because we use `mtime` to determine if a file has actually changed, but on most systems this has a resolution of 1 second (and we truncate it to an integer anyways).
Without this wait, we would skip reloading a file that has been changed multiple times in the same `mtime` second, thus losing some data.
* Modified autoreload to use new dirwatch infrastructure, and added in nagview to verify that fs changes don't stomp on our changes, unless you want them to.
* Split out reload functionality to actual document, and added in a thread to check the document, in the cases where it wouldn't be covered by dirwatch.
* As per request from jgmdev, added in ability to show nagview always.
* Changed things over to use dirwatch.
* Made sure we redrew things, added in a contingency in 'save' for times when we load a non-existent file, and added some checks.
Guldoman
vqn
Jefferson González
Adam
Francesco Abbate
rxi