Prepare CHANGELOG for 1.26.0 release

Author: eyalkoren

CHANGELOG.asciidoc

@@ -20,8 +20,20 @@ endif::[]
 
 === Unreleased
 
+[[release-notes-1.27.0]]
+==== 1.27.0 - YYYY/MM/DD
+
+[float]
+===== Features
+
+[float]
+===== Bug fixes
+
+[[release-notes-1.x]]
+=== Java Agent version 1.x
+
 [[release-notes-1.26.0]]
-==== 1.26.0 - YYYY/MM/DD
+==== 1.26.0 - 2021/09/14
 
 ===== Potentially breaking changes
 * If you rely on Database span subtype and use Microsoft SQL Server, the span subtype has been changed from `sqlserver`
@@ -41,7 +53,7 @@ user to configure an arbitrary agent version that will be downloaded from maven
 
 [float]
 ===== Performance improvements
-* Reduce GC time overhead caused by WeakReferences - {pull}2086[#2086]
+* Reduce GC time overhead caused by WeakReferences - {pull}2086[#2086], {pull}2081[#2081]
 * Reduced memory overhead by a smarter type pool caching strategy - {pull}2102[#2102]. +
   The type pool cache improves the startup times by speeding up type matching
   (determining whether a class that's about to be loaded should be instrumented).
@@ -58,7 +70,6 @@ user to configure an arbitrary agent version that will be downloaded from maven
 ** Reduced GC time due to the additional headroom that the application can utilize.
 ** Based on heap dump analysis, after warmup, the cache size is now around 59kb (down from 23mb with the previous strategy).
 
-
 [float]
 ===== Bug fixes
 * Fix failure to parse some forms of the `Implementation-Version` property from jar manifest files - {pull}1931[#1931]
@@ -67,15 +78,12 @@ user to configure an arbitrary agent version that will be downloaded from maven
 * Fix Webflux response status code - {pull}1948[#1948]
 * Ensure path filtering is applied when Servlet path is not available - {pull}2099[#2099]
 * Align span subtype for MS SqlServer - {pull}2112[#2112]
-* Fix potential destination host corruption in OkHttp client spans - {pull}2118[#2118]
+* Fix potential destination host name corruption in OkHttp client spans - {pull}2118[#2118]
 
 [float]
 ===== Refactorings
 * Migrate several plugins to indy dispatcher {pull}2087[#2087], {pull}2088[#2088], {pull}2090[#2090], {pull}2094[#2094], {pull}2095[#2095]
 
-[[release-notes-1.x]]
-=== Java Agent version 1.x
-
 [[release-notes-1.25.0]]
 ==== 1.25.0 - 2021/07/22