chore: Update changelog, increment assembly patch version

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [16.0.3] 2022-06-23
+### Changed
+ - Throwing better exception when trying to get unknown timezones
+
 ## [16.0.2] 2022-05-23
 ### Changed
  - Fixed an issue in IcdUriBuilder where relative pathes were not being built into a valid URI.

ICD.Common.Utils/Properties/AssemblyInfo.cs

@@ -4,4 +4,4 @@ using System.Reflection;
 [assembly: AssemblyCompany("ICD Systems")]
 [assembly: AssemblyProduct("ICD.Common.Utils")]
 [assembly: AssemblyCopyright("Copyright © ICD Systems 2022")]
-[assembly: AssemblyVersion("16.0.2.0")]
+[assembly: AssemblyVersion("16.0.3.0")]

ICD.Common.Utils/TimeZoneInfo/IcdTimeZoneInfo.cs

@@ -61,7 +61,11 @@ namespace ICD.Common.Utils.TimeZoneInfo
 
 		public static IcdTimeZoneInfo FindSystemTimeZoneById(string timeZoneId)
 		{
-			return s_Cache[timeZoneId];
+		    IcdTimeZoneInfo timeZone;
+		    if (s_Cache.TryGetValue(timeZoneId, out timeZone))
+		        return timeZone;
+
+            throw new KeyNotFoundException(string.Format("Unable to find timezone with id:{0}", timeZoneId));
 		}
 
 		public static bool TryFindSystemTimeZoneById(string timeZoneId, out IcdTimeZoneInfo output)