Prepare patch release 1.3.1 (#747)

* Prepare patch release 1.3.1

* Update CHANGELOG.asciidoc

Author: gregkalapos

CHANGELOG.asciidoc

@@ -21,6 +21,15 @@ endif::[]
 [[release-notes-1.x]]
 === .NET Agent version 1.x
 
+[[release-notes-1.3.0]]
+==== 1.3.1
+
+[float]
+===== Bug fixes
+- Fix log spamming issues  {pull}736[#736], {pull}738[#738]
+- Fix turning HTTP 415 responses in ASP.NET Core to HTTP 500 when request body capturing is active {pull}739[#739]
+- Fix disabling GC metrics collection in case no GC is triggered during the first "5*MetricsInterval" of the process {pull}745[#745]
+
 [[release-notes-1.3.0]]
 ==== 1.3.0
 

ElasticApmAgent.sln

@@ -46,6 +46,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "files", "files", "{B406113B
 		RELEASING.md = RELEASING.md
 		global.json = global.json
 		Directory.Build.props = Directory.Build.props
+		CHANGELOG.asciidoc = CHANGELOG.asciidoc
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Elastic.Apm.PerfTests", "test\Elastic.Apm.PerfTests\Elastic.Apm.PerfTests.csproj", "{F069CE99-F418-4BC2-9E44-8F03497D8DA8}"

src/Directory.Build.props

@@ -2,11 +2,11 @@
   <!-- Src Directory Build Properties -->
   <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)../'))" />
   <PropertyGroup>
-    <AssemblyVersion>1.3</AssemblyVersion>
-    <InformationalVersion>1.3</InformationalVersion>
-    <FileVersion>1.3</FileVersion>
+    <AssemblyVersion>1.3.1</AssemblyVersion>
+    <InformationalVersion>1.3.1</InformationalVersion>
+    <FileVersion>1.3.1</FileVersion>
 
-    <PackageVersion>1.3</PackageVersion>
+    <PackageVersion>1.3.1</PackageVersion>
     <Authors>Elastic and contributors</Authors>
     <Copyright>2020 Elasticsearch BV</Copyright>
     <PackageLicenseUrl>https://github.com/elastic/apm-agent-dotnet/blob/master/LICENSE</PackageLicenseUrl>