Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump version to 0.1.12 (tokio-rs#718)

Also bumps the following sub-crates:

* tokio-fs (0.1.4)
* tokio-io (0.1.10)
* tokio-signal (0.2.6)
* tokio-threadpool (0.1.8)
* tokio-uds (0.2.3)

Bump tokio-uds to v0.2.2

Bump version to v0.1.11 (tokio-rs#675)

This fixes the dependency on `tokio-async-await` to not be scoped to
unix platforms.

Fixes tokio-rs#673

Bump version to v0.1.10, fixing minimal versions (tokio-rs#671)

Some minimal versions were not correctly updated.

Also updates:

* tokio-current-thread (v0.1.3).

Bump version to v0.1.9 (tokio-rs#666)

This also includes bumps to subcrates.

* tokio-async-await (0.1.4)
* tokio-codec (0.1.1)
* tokio-current-thread (0.1.2)
* tokio-executor (0.1.5)
* tokio-io (0.1.9)
* tokio-reactor (0.1.6)
* tokio-tcp (0.1.2)
* tokio-threadpool (0.1.7)
* tokio-timer (0.2.7)