added entry to changelog

Author: littleaj

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Introducing Telemetry Processor 'com.microsoft.applicationinsights.internal.channel.samplingV2.FixedRateSamplingTelemetryProcessor'
 - Introducing FixedRate Sampling v2 Using Telemetry Processors
 - Fixed issue #436 (TraceTelemetry with Severity is not shown in UI). This fixes a regression issue with `TelemetryClient.trackTrace` and `TelemetryClient.trackException`.
+- Compilation now targets Java 1.7. Java 1.6 is no longer supported.
 
 ## Version 1.0.10
 - `track()` method of 'com.microsoft.applicationinsights.TelemetryClient' is now modified. No longer performing pre-sanitization