prettybitmask

All this does is make bit masking operations a bit prettier.

Example

``` let mut n = 0;

let m = 1;

n |= m; // apply mask m normally n.mask(m); // apply mask m prettily

assert!(n & m == m); // check if mask m has been applied normally assert!(n.masked(m)); // check if mask m has been applied prettily

n &= !m; // unmask mask m normally n.unmask(m); // unmask mask m prettily

n ^= m; // flip mask m normally n.flip(m); // flip mask m prettily ``` Typing out the pretty version takes a tad longer, but it can help make one's code clearer.