Merge pull request #79 from PowerShell/daviwil/changelog

Add CHANGELOG.md to track release notes

Author: daviwil

CHANGELOG.md

@@ -0,0 +1,42 @@
+# PowerShell Editor Services Release History
+
+## 0.3.0
+### Tuesday, December 15, 2015
+
+- First release with official NuGet packages!
+  - [Microsoft.PowerShell.EditorServices](https://www.nuget.org/packages/Microsoft.PowerShell.EditorServices/) - Core .NET library
+  - [Microsoft.PowerShell.EditorServices.Protocol](https://www.nuget.org/packages/Microsoft.PowerShell.EditorServices.Protocol/) - Protocol and client/server library
+  - [Microsoft.PowerShell.EditorServices.Host](https://www.nuget.org/packages/Microsoft.PowerShell.EditorServices.Host/) - API host process package
+- Introduced a new client/server API in the Protocol project which makes it
+  much easier to write a client or server for the language and debugging services
+- Introduced a new channel model which makes it much easier to add and consume
+  new protocol channel implementations  
+- Major improvements in variables retrieved from the debugging service:
+  - Global and script scope variables are now accessible
+  - New "Autos" scope which shows only the variables defined within the current scope
+  - Greatly improved representation of variable values, especially for dictionaries and
+    objects that implement the ToString() method
+- Added new "Expand Alias" command which resolves command aliases used in a file or 
+  selection and updates the source text with the resolved command names
+- Reduced default Script Analyzer rules to a minimal list    
+- Improved startup/shutdown behavior and logging
+- Fixed a wide array of completion text replacement bugs
+
+## 0.2.0
+### Monday, November 23, 2015
+
+- Added Online Help command
+- Enabled PowerShell language features for untitled and in-memory (e.g. in Git diff viewer) PowerShell files
+- Fixed high CPU usage when completing or hovering over an application path
+
+## 0.1.0
+### Wednesday, November 18, 2015
+
+Initial release with the following features:
+
+- IntelliSense for cmdlets and more
+- Rule-based analysis provided by PowerShell Script Analyzer
+- Go to Definition of cmdlets and variables
+- Find References of cmdlets and variables
+- Document and workspace symbol discovery
+- Local script debugging and basic interactive console support