update docs

Author: samsonwang

README.org

@@ -3,8 +3,8 @@
 
 * LaunchyQt
 [[https://github.com/samsonwang/LaunchyQt/releases][file:https://img.shields.io/github/release/samsonwang/LaunchyQt.svg]]
-[[https://doc.qt.io/qt-5.9.8/][file:https://img.shields.io/badge/Qt-5.9.8-41cd52.svg]]
-[[https://www.python.org/downloads/release/python-367/][file:https://img.shields.io/badge/python-3.6.7-blue.svg]]
+[[https://doc.qt.io][file:https://img.shields.io/badge/Qt-5.12.10-41cd52.svg]]
+[[https://www.python.org][file:https://img.shields.io/badge/python-3.9.6-blue.svg]]
 [[https://github.com/samsonwang/LaunchyQt/blob/master/LICENSE][file:https://img.shields.io/github/license/samsonwang/LaunchyQt.svg]]
 [[https://github.com/samsonwang/LaunchyQt/releases][file:https://img.shields.io/github/downloads/samsonwang/LaunchyQt/total.svg]]
 
@@ -24,7 +24,7 @@ Compared to the old one, LaunchyQt offers more as follows:
 
 
 ** Latest release
-Checkout detailed info and download latest binary at [[https://github.com/samsonwang/LaunchyQt/releases][github release page]] or [[https://sourceforge.net/projects/launchyqt/files/][sourceforge release page]].
+Checkout detailed info and download latest binary at [[https://github.com/samsonwang/LaunchyQt/releases][github release page]] .
 
 
 ** Credits

docs/CHANGELOG.org

@@ -1,4 +1,13 @@
 
+* 3.1.2 (2021-7-20)
+- new feature #23 #37: UWPApp plugin for indexing UWP applications
+- translation: add Portuguese and Italian translation
+- fix bug #53: fail to open nested folder
+- fix bug #31: CalcPy fail to calculate negative numbers
+- fix bug: fail to extract icon from 32-bit lnk
+- move python plugin log into system temp folder
+- use Qt5.12.10 and Python3.9.6
+
 * 3.1.1 (2020-1-29)
 - fix bug #21, crash when backspace key is pressed
 - fix bug #22, fail to paste clipboard to excel

docs/RELEASE_INSTRUCTIONS.org

@@ -1,7 +1,7 @@
 
 here are the procedures to release a new version, in case of I forget something when doing release.
 
-1. update version number in source code
+1. update version number in source code (.cpp file and .rc file)
 2. update CHANGELOG
 3. update translation files
 4. commit all changes in source code