Update changelog.

Author: michaelwoerister

CHANGELOG.md

@@ -1,13 +1,14 @@
 # Changelog
 
-## Unreleased
+## [0.5.0] - 2019-12-02
 ### Added
 - `flamegraph`: new tool that uses the `inferno` crate to generate flamegraph svg files ([GH-73])
 - `crox`: Added the `--dir` parameter to merge all events files in dir in to one trace file ([GH-84])
 - `crox`: Added possibility to add multiple `file_prefix` parameters to merge all them to one trace file ([GH-84])
 - `summarize`: Added self_time_change as percentage change of self_time from base to the `diff` sub command ([GH-87])
 
 ### Changed
+- `measureme`: Stringtable data is recorded in a more compact format ([GH-90])
 - `measureme`: Events are recorded in a more compact format ([GH-76])
 - `stack_collapse`: Removed the `--interval` commandline option ([GH-76])
 
@@ -52,3 +53,4 @@
 [GH-76]: https://github.com/rust-lang/measureme/pull/76
 [GH-84]: https://github.com/rust-lang/measureme/pull/84
 [GH-87]: https://github.com/rust-lang/measureme/pull/87
+[GH-90]: https://github.com/rust-lang/measureme/pull/90