Rev version to 2.0-preview, add release notes

releasenotes.md

@@ -1,2 +1,12 @@
-- Add assembly scanning extensions for including orchestrations and activities.
-- Add `TaskAliasAttribute`
+# Release 2.0-preview
+
+## Breaking Changes
+- Refactor of ITaskHubWorkerBuilder interface and extension methods.
+- Descriptors base classes removed.
+
+## Additions
+- Can now call `AddTaskHubWorker`/`ConfigureTaskHubWorker` multiple times, same builder will be used.
+- Can insert middleware at desired place, remove existing middleware, etc.
+- DI ObjectFactory used for improved performance
+- Support for func middleware and interface activities.
+- Update to DTFx 2.4.0, add `ILoggerFactory` while building.

version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://raw.githubusercontent.com/AArnott/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "1.0-preview",
+  "version": "2.0-preview",
   "publicReleaseRefSpec": [
     "^refs/heads/master$",
     "^refs/tags/v\\d+\\.\\d+"