Smarty v4 update to v4.3.4

ReadMe.md

@@ -23,3 +23,24 @@ Alternative setup composer local zip file repot:
 ## Install package
 
 `composer require egrajp/smarty-extended:^4.3`
+
+## How to update
+
+1) update the original composer for ^4.3
+2) copy over the src/sysplugins and all base files in src/
+3) check either function.html_checkboxes.php and function.html_options.php have changed
+4) copy src/plugins except the above two files, be sure to keep the block.t.php and function_popup*.php
+5) Create new release version as official relase number
+
+## Updated files (different from master)
+
+### New
+
+`src/plugins/block.t.php`
+`src/plugins/function_popup.php`
+`src/plugins/function_popup.init.php`
+
+### Changed
+
+`src/plugins/function.html_checkboxes.php`
+`src/plugins/function.html_options.php`