Fix race in ref count manipulation harder
Merge pull request #15 from pcwalton/slow-drop-fix

Fix race in ref count manipulation harder
Upgrade to rustc 2014-09-15
Merge pull request #16 from servo/rustup

Upgrade to rustc 2014-09-15
Add more static atoms

Servo's interface to the HTML parser needs these.
Use ptr::null_mut() instead of ptr::mut_null() which is deprecated.
Merge pull request #18 from servo/warn

Use ptr::null_mut() instead of ptr::mut_null() which is deprecated to remove compiler warinings; r=Manishearth
Merge pull request #17 from kmcallister/static-atoms

Add more static atoms; r=Ms2ger
Add a wrapper for atoms that represent namespaces
Merge pull request #20 from kmcallister/namespace

Add a wrapper for atoms that represent namespaces
Add some CSS keywords as static atoms.
Remove the managed_boxes feature (fixes #23).
Merge pull request #24 from servo/gc

Remove the managed_boxes feature (fixes #23).
Merge pull request #21 from glennw/css-keywords

Add some CSS keywords as static atoms.
Upgrade to rustc 0.13.0-dev (78a767689 2014-10-10 14:57:03 +0000)

Needed for html5ever master.
Merge pull request #25 from kmcallister/rustup

Upgrade to rustc 0.13.0-dev (78a767689 2014-10-10 14:57:03 +0000)
Upgrade to rustc 0.13.0-nightly (222ae8b9b 2014-10-18 00:47:22 +0000)

- Need this working for html5ever.
Merge pull request #27 from Ygg01/master

Upgrade to rustc 0.13.0-nightly (222ae8b9b 2014-10-18 00:47:22 +0000)
Fix PartialOrd for Atom

This snuck in during a Rust upgrade.
Add tests for low-level representation