Use println! instead if printfmt!

printfmt! got removed from rust.
Don't use Mem{Reader,Writer}.buf

The field became private in current rust.
Add some simple automation of performance comparisons with ab.
Merge pull request #18 from skade/master

Compatibility changes for recent Rust changes
Use the Decorator trait rather than workarounds
Add a .travis.yml
Add a fancy build status image
Merge pull request #20 from skade/travis

Travis CI
Fix image target parameter

The :target: part needed to be on the next line.
Remove unreachable!() macro (upstream has it now).
Merge pull request #19 from cmr/decorator

Use the Decorator trait rather than workarounds
Change bare loop to continue

Rust now uses loop for proper loops exclusively
Change float to f64 everywhere

float without size got removed from Rust.
Merge pull request #21 from skade/rust-master-fixes

Rust master fixes
Add some doc comments.
Replace IntConvertible with {From,To}Primitive.

(IntConvertible has now been removed from the language.)
Add dependency on unstable feature macro_rules.

This is now needed to make macro_rules! work.
Remove glob imports (now behind a feature flag).
Fix missing imports on tests.
Don't make examples in the default rule.