Bump version to 4.0.1 and update release notes

Updated the project version to 4.0.1 and revised the release notes to mention icon URL fixes.

Author: tsjdev-apps

src/OpenWeatherMapSharp/OpenWeatherMapSharp.csproj

@@ -4,7 +4,7 @@
 		<TargetFramework>netstandard2.0</TargetFramework>
 		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 		<Title>OpenWeatherMapSharp</Title>
-		<Version>4.0.0</Version>
+		<Version>4.0.1</Version>
 		<Authors>Thomas Sebastian Jensen</Authors>
 		<Company>tsjdev-apps.de</Company>
 		<Description>An unofficial .NET API wrapper for OpenWeatherMap.org</Description>
@@ -15,9 +15,7 @@
 		<PackageIcon>icon.png</PackageIcon>
 		<PackageTags>OpenWeatherMap; Api; Mock; Wrapper; free; Weather</PackageTags>
 		<PackageReleaseNotes>
-			- Add Air Pollution endpoints
-			- Update NuGet packages
-			- Code improvements
+			- Fix icon urls
 		</PackageReleaseNotes>
 		<NeutralLanguage>en</NeutralLanguage>
 		<PackageReadmeFile>README.md</PackageReadmeFile>