docs: add more options to list of new features

Author: ghiscoding

README.md

@@ -45,8 +45,13 @@ npm install multiple-select-vanilla
 New Multiple-Select Options:
 - dropped jQuery requirement and replaced necessary code with browser native code.
 - rewritten in TypeScript to also add typings support (`d.ts`)
-- revamped the UI to give it a more Modern Look by updating the CSS and using SVG icons (CSS/SASS variables are also availables)
-- add extra features:
+- make the lib CSP compliant (see section below)
+- revamped the UI to give it a more Modern Look:
+  - improve CSS styling and use SVG icons (CSS/SASS variables are also availables)
+  - new Dark Mode
+  - replace tabIndex by a more intuitive navigation & highlight by using arrow keys (or mouse hover)
+  - show 3 different states on multiple selections (none " ", partial "-", all "🗸")
+- add extra options:
   - `autoAdjustDropHeight` will automatically adjust the drop (up/down) height by available space (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options30))
   - `autoAdjustDropPosition` will find best position (top/bottom) by its available space (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options29))
   - `autoAdjustDropWidthByTextSize` automatically set the drop width size from the widest list option width
@@ -59,11 +64,13 @@ New Multiple-Select Options:
   - `showOkButton` to add an "OK" button at the end of the multiple select option list (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options25))
   - `showSearchClear` show a clear button on the search filter input (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options34))
   - `diacriticParser` custom parser to normalize diacritic signs when filtering select list (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options35))
-  - replace tabIndex by a more intuitive navigation & highlight by using arrow keys (or mouse hover)
   - `darkMode` option for a new **Dark Mode** Theme (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options38))
+  - `infiniteScroll` option (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options36))
+  - `onFilterClear` callback that will be executed when the filter gets cleared (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/events))
+  - `onClose(reason)` callback that will be executed when the dropdown closes (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/events))
 
 ## CSP Compliance
-The library is now CSP (Content Security Policy) compliant, however there are some exceptions to be aware of. When using any HTML strings as template (when using `textTemplate`, `labelTemplate`, `renderOptionLabelAsHtml` or `useSelectOptionLabelToHtml`), you will not be fully compliant unless you return [`TrustedHTML`](https://developer.mozilla.org/en-US/docs/Web/API/TrustedHTML). You can achieve safety by using the `sanitizer` method in combo with an external library like [DOMPurify](https://github.com/cure53/DOMPurify) to return `TrustedHTML` as shown below and with that in place you will be CSP compliant.
+The library is now CSP (Content Security Policy) compliant, however there are some exceptions to be aware of. When using any HTML strings as template (when using `textTemplate`, `labelTemplate`, `renderOptionLabelAsHtml` or `useSelectOptionLabelToHtml`), you will not be fully compliant unless you return [`TrustedHTML`](https://developer.mozilla.org/en-US/docs/Web/API/TrustedHTML). You can achieve this by using the `sanitizer` method in combo with an external library like [DOMPurify](https://github.com/cure53/DOMPurify) (recommended) to return `TrustedHTML` as shown below and with that in place you will be CSP compliant.
 
 ```typescript
 import DOMPurify from 'dompurify';