Bump to 0.1.5 on crates.io for core::slice::Iter support

[tcr]

Getting this error as of rust nightly 12-23:

src/namespace.rs:2:5: 2:23 error: unresolved import `core::slice::Items`. There is no `Items` in `core::slice`
src/namespace.rs:2 use core::slice::Items;
                       ^~~~~~~~~~~~~~~~~~

Changed as of this commit: rust-lang/rust@f8cfd24#diff-91f9d2237c7851d61911b0ca64792a88

[tcr]

Saw this was updated already. #45 Changed to bump version request.

[tomaka]

@netvl Can I publish versions on crates.io (pre-rust-1.0)?
I'm also planning on keeping gl-rs up-to-date on crates.io, which requires xml-rs to be up-to-date.

[netvl]

@tomaka sure, I've added you to the owners list from the beginning. Sorry, I sometimes forget to update the crate on crates.io :(

[tcr]

Thanks for your work @netvl (and @tomaka)! Rust 1.0 can't come soon enough.

[tomaka]

Uploaded (see #49)

[netvl]

Thank you very much!