Add CHANGELOG file for 2.0.0-M1

Author: ashawley

Diff for: CHANGELOG.md

@@ -0,0 +1,61 @@
+# Scala XML Changes
+
+## 2.0.0-M1 (2019-10-21)
+
+Not binary compatible with Scala XML 1.2.0.
+
+Published for Scala 2.12, 2.13 and Scala.js 0.6, 1.0.0-M8.
+Artifacts are no longer published for Scala 2.11.
+
+There have been a number of deprecated elements that have been
+removed, see the "[Removed](#Removed)" section below.
+
+### Added
+
+- The `apiURL` is now published in ivy metadata so that hyperlinks
+  exist in downstream projects that reference Scala XML in their
+  Scaladocs.
+
+### Changed
+
+- Changed use of `scala.collection.mutable.Stack` in `FactoryAdapter` to a
+  `scala.collection.immutable.List`.  These members were affected.
+  - `attribStack`
+  - `hStack`
+  - `tagStack`
+  - `scopeStack`
+- The abstract class `FactoryAdapter`, see above, is used elsewhere
+  within the library, as well, so the previous changes are also
+  inherited by:
+    - `scala.xml.parsing.NoBindingFactoryAdapter` implemented class
+    - `scala.xml.factory.XMLLoader.adapter` static member
+
+### Fixed
+
+- Attribute order is preserved for XML elements, not reversed.
+- Don't escape quotes in `scala.xml.PCData` and `CDATA` as an XML `"`
+
+### Removed
+
+Most of these deletions are of vestigial code that is either unused,
+of poor quality or both.  Very few users of Scala XML will even notice
+the removed parts.  Most users will not be affected.
+
+The deletions represent about one thousand lines of code (sloc).  By
+comparison Scala XML is 10,000 sloc, so this is about 10% reduction in
+sloc.  The code that supports XML literals is maintained upstream in
+the Scala compiler, not in the Scala XML library.
+
+- Remove deprecated `scala.xml.pull.XMLEventReader`
+- Remove deprecated versions of `scala.xml.Elem` constructors
+- Remove deprecated `scala.xml.Elem.xmlToProcess` and
+  `scala.xml.Elem.processXml`
+- Remove deprecated definitions under `scala.xml.persistent`
+  - `CachedFileStorage`
+  - `Index`
+  - `SetStorage`
+- Remove `scala.xml.dtd.impl.PointedHedgeExp`
+- Remove `scala.xml.dtd.Scanner`
+- Remove `scala.xml.dtd.ContentModelParser`
+- Remove `scala.xml.factory.Binder`
+- Remove `scala.xml.parsing.ValidatingMarkupHandler`

Diff for: README.md

@@ -14,6 +14,10 @@ API documentation is available [here](https://scala.github.io/scala-xml/api/1.2.
 
 How to documentation is available in the [wiki](https://github.com/scala/scala-xml/wiki)
 
+The latest stable release of Scala XML is 1.2.0.
+
+Milestone releases of Scala XML version 2.0 are available, starting with 2.0.0-M1.  See the changes for 2.0 in `CHANGELOG.md`.
+
 ## Maintenance status
 
 This library is community-maintained. The lead maintainer is [@aaron_s_hawley](https://github.com/ashawley).