Problem with Bound's PartialOrd implementation

[rsnively]

Comparing bounds can have different interpretations if we're talking about lower bounds or upper bounds.

For example if

let a = Bound::Excluded(4);
let b = Bound::Included(4);

When we're talking about upper bounds, a < b but if we're talking about lower bounds, a > b

Splitting up Bound into UpperBound and LowerBound might solve the problem. Could also consider getting rid of the implementation and dealing with the fallout.

[rsnively]

Fixed in 0.1.1

The implementation was removed from Bound and added to the new LowerBound and UpperBound structs.