Update changelog

Signed-off-by: Denis Varlakov <denis@dfns.co>

Author: survived

CHANGELOG.md

@@ -1,3 +1,13 @@
+## v0.2.0
+* BREAKING: update rand_core dep to latest `v0.9`
+* POSSIBLY BREAKING: the seed is now printed to stderr instead of stdout
+* Replace dependency on `hex` with better-maintained `const-hex v1`
+* Add optional feature `rand-v09`: when it's enabled, library re-exports `rand v0.9` that will be
+  accessible as `rand_dev::rand`
+* Improve CI workflow
+
+See [#4](https://github.com/survived/rand_dev/pull/4)
+
 ## v0.1.1
 * Add `DevRng::fork` method that derives a new randomness generator from existing one \
   May be useful when you have several threads/futures/places where you need access the randomness