tracing: prepare to release v0.1.22 (tokio-rs#1119)

### Changed

- Updated `pin-project-lite` dependency to 0.2 ([tokio-rs#1108])

[tokio-rs#1108]: tokio-rs#1108

tracing/CHANGELOG.md

@@ -1,3 +1,11 @@
+# 0.1.22 (November 23, 2020)
+
+### Changed
+
+- Updated `pin-project-lite` dependency to 0.2 ([#1108])
+
+[#1108]: https://github.com/tokio-rs/tracing/pull/1108
+
 # 0.1.21 (September 28, 2020)
 
 ### Fixed
@@ -24,7 +32,7 @@ Thanks to @nagisa, and new contributors @SecurityInsanity, @froydnj, @jyn514 and
 
 [#994]: https://github.com/tokio-rs/tracing/pull/994
 [#992]: https://github.com/tokio-rs/tracing/pull/992
-[#987]: https://github.com/tokio-rs/tracing/pull/987 
+[#987]: https://github.com/tokio-rs/tracing/pull/987
 [#980]: https://github.com/tokio-rs/tracing/pull/980
 [#981]: https://github.com/tokio-rs/tracing/pull/981
 [#964]: https://github.com/tokio-rs/tracing/pull/964

tracing/README.md

@@ -245,7 +245,7 @@ my_future
 is as long as the future's.
 
 The second, and preferred, option is through the
-[`#[instrument]`](https://docs.rs/tracing/0.1.21/tracing/attr.instrument.html)
+[`#[instrument]`](https://docs.rs/tracing/0.1.22/tracing/attr.instrument.html)
 attribute:
 
 ```rust
@@ -292,7 +292,7 @@ span.in_scope(|| {
 // Dropping the span will close it, indicating that it has ended.
 ```
 
-The [`#[instrument]`](https://docs.rs/tracing/0.1.21/tracing/attr.instrument.html) attribute macro
+The [`#[instrument]`](https://docs.rs/tracing/0.1.22/tracing/attr.instrument.html) attribute macro
 can reduce some of this boilerplate:
 
 ```rust