Updating readme

Author: Samreay

README.md

@@ -44,6 +44,7 @@ which have helped improve ChainConsumer:
 
 - Simon Dupourqué (for his PRs and suggestions to make ChainConsumer better for all)
 - Chris Davis (check out https://github.com/cpadavis/preliminize)
+- Natalie B. Hogg
 - Joe Zuntz
 - Scott Dedelson
 - Elizabeth Krause
@@ -67,6 +68,11 @@ If you are running on HPC or clusters where you can't install things yourself, u
 
 ### Update History
 
+##### 1.3.0
+
+- Adding HDI summary statistics with a `multimodal` kwarg to the Chains. Thanks @renecotyfanboy!
+- Adding 1D distribution plots via a `plot_dist` method. Thanks @nataliehogg!
+
 ##### 1.2.5
 
 - Fixing bug and allowing truth values to have their edge colour specified as per #153