Updating CHANGELOG.md (#488)

CHANGELOG.md

@@ -1,11 +1,20 @@
 # Change Log for RCCL
 
 Full documentation for RCCL is available at [https://rccl.readthedocs.io](https://rccl.readthedocs.io)
-## [UNRELEASED]
+
+## RCCL-2.10.3 for ROCm 5.0.0
 ### Added
-- Compatibility with NCCL 2.9.9
+- Compatibility with NCCL 2.10.3
+### Known issues
+- Managed memory is not currently supported for clique-based kernels
+
+## RCCL-2.9.9 for ROCm 4.5.0
 ### Changed
 - Packaging split into a runtime package called rccl and a development package called rccl-devel. The development package depends on runtime. The runtime package suggests the development package for all supported OSes except CentOS 7 to aid in the transition. The suggests feature in packaging is introduced as a deprecated feature and will be removed in a future rocm release.
+### Added
+- Compatibility with NCCL 2.9.9
+### Known issues
+- Managed memory is not currently supported for clique-based kernels
 
 ## [RCCL-2.8.4 for ROCm 4.3.0]
 ### Added