added CHANGELOG, ready to tag version v0.2.0

Author: thunderer

CHANGELOG.md

@@ -0,0 +1,20 @@
+# Changelog
+
+## Version 0.*
+
+* v0.2.0 (17.04.2015)
+
+  * added HandlerInterface to enable shortcode handlers with basic validation capabilities,
+  * added default handler for processing shortcodes without registered name handlers,
+  * added handler aliasing to reuse name handlers without manually registering them,
+  * added recursive processing with ability to control recursion depth,
+  * added iterative processing with ability to control maximum number of iterations,
+  * added configurable syntax to enable different shortcode formats without modifying library code,
+  * added syntax builder to ease building `Syntax` object,
+  * added dash `-` to allowed characters in shortcode names,
+  * deprecated `Processor::setRecursion()`, use `Processor::setRecursionDepth()` instead,
+  * removed regular expressions constants from classes,
+
+* v0.1.0 (06.04.2015)
+
+  * first library version