bump rlcore version (#1073)

* Update Project.toml

* Update NEWS.md

Author: jeremiahpslewis

src/ReinforcementLearningCore/NEWS.md

@@ -1,3 +1,9 @@
+# ReinforcementLearningCore.jl Release Notes
+
+#### v0.15.2
+
+- Make QBasedPolicy general for AbstractLearner s (#1069)
+
 #### v0.15.1
 
 - Fix MultiPlayer hook bugs
@@ -71,4 +77,4 @@
 #### v0.8.0
 
 - Removed `ResizeImage` preprocessor to reduce the dependency of `ImageTransformations`. 
-- Show unicode plot at the end of an experiment in the `TotalRewardPerEpisode` hook.
+- Show unicode plot at the end of an experiment in the `TotalRewardPerEpisode` hook.

src/ReinforcementLearningCore/Project.toml

@@ -1,6 +1,6 @@
 name = "ReinforcementLearningCore"
 uuid = "de1b191a-4ae0-4afa-a27b-92d07f46b2d6"
-version = "0.15.1"
+version = "0.15.2"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"