- sync: fix a regression where `Mutex`, `Semaphore`, and `RwLock` fut…

…ures no

  longer implement `Sync` (tokio-rs#2375)
- fs: fix `fs::copy` not copying file permissions (tokio-rs#2354)

- time: added `deadline` method to `delay_queue::Expired` (tokio-rs#2300)
- io: added `StreamReader` (tokio-rs#2052)

chore: Prepare `0.2.15` release (tokio-rs#2365)

Signed-off-by: Lucio Franco <luciofranco14@gmail.com>

chore: prepare tokio v0.2.14 release (tokio-rs#2356)

chore: prepare v0.2.13 release (tokio-rs#2282)

Includes a quick bug fix

chore: prepare v0.2.12 release (tokio-rs#2278)

Also includes `tokio-macros` v0.2.5.

chore: prepare v0.2.11 release (tokio-rs#2179)

Also bumps:
- tokio-macros: v0.2.4

chore: prepare v0.2.11 release (tokio-rs#2179)

Also bumps:
- tokio-macros: v0.2.4

chore: prepare v0.2.10 release (tokio-rs#2148)

chore: prepare v0.2.9 release (tokio-rs#2084)

macros: fix breaking changes (tokio-rs#2069)

Brings back old macro implementations and updates the version of
tokio-macros that tokio depends on.

Prepares a new release.