Release a new version with stable alloc

[roblabla]

Heyo, would it be possible to get a new release with the removed feature check around the alloc feature #159 ? Otherwise the alloc feature isn't usable on stable compilers. Thanks :).

[asajeffrey]

Cue conversation about whether this is a breaking change, requiring a major version bump, or not.

[mbrubeck]

#159 only affects builds without the 'std' feature, which was previously only possible with nightly Rust. Any existing stable Rust users are unaffected, so I would consider this a non breaking change. (Users of fairly old nightly Rust could be broken, but they were explicitly using unstable features and opted into this risk.)

[roblabla]

Alloc was stabilized in nightly on April 15th. This will break nightly users older than that. Nightly users should be expecting breaking changes if they don't pin their dependencies anyways (and thankfully, this is the last time alloc breaks nightly users 🎉 ).

[dignifiedquire]

any update on this?

[roblabla]

Bump?

[mbrubeck]

Published version 0.6.11.