Removing SetChanged

SetChanged only works if the values are comparable, so we need to remove that.

Updating README

v0.2.1

Updating the ReadMe

Sort Function

The interface changed for slice maps. Instead of one-time sorting, you can now add a sort
function. If you want one-time sorting, you can add this sort function just before iterating.
The sort function doubles the time to insert items in a 10,000 item set, so its not a big slow down for getting a big benefit.

Also improved test coverage. All tests cover 90 - 97% now.

Adding GetKeyAt to slice map

Merge pull request #7 from spekary/GetKeyAt

Cleanup and adding GetKeyAt to slice maps.

Updating gofile

v0.1.4

Updating gofile

Minor fixes

v0.1.3

Fixing slice map package

FInal go get fix

v0.1.2

Fixing up README

Attempt to fix problem with go get

v0.1.1

regression

First releasd

v0.1.0

Fixing mod file