Add changelog information for release 1.11

changelog.md

@@ -2,6 +2,14 @@ Lite XL is following closely [rxi/lite](https://github.com/rxi/lite) but with so
 
 This files document the differences between Lite XL and rxi/lite for each version.
 
+### 1.11
+
+- include improvements from rxi's Lite 1.11
+- fix behavior of tab to indent on multiple lines selection
+- disable auto-complete on very big files to limit memory usage
+- limit project scan to a maximum number of files to limit memory usage
+- list recently visited files when using "Find File" command
+
 ### 1.08
 
 - Subpixel font rendering, removed gamma correction