README.org: v0.4 remark

README.org

@@ -29,6 +29,28 @@ Install [[file:icons/lr-32.png]] LinkRemark:
 - [[https://chromewebstore.google.com/detail/linkremark/mgmcoaemjnaehlliifkgljdnbpedihoe][Extension in Chrome Web Store]].
 :end:
 
+Changes in LinkRemark-0.4 release are almost entirely related
+to forced transition to another API version for Chrome extensions.
+Minor fixes:
+- Earlier zero-width space characters U+200B were added after timestamps.
+  You may want to remove them from your notes, use search and replace for
+  : :LAST_MODIFIED: [2021-09-18 Tue 01:23]<200b> 09/18/2021 01:23:46
+- Only first =<script>= element with JSON-LD metadata was taken into account.
+
+As to Manifest V3 API, it required significant amount of work.
+New bugs may appear due to more complex initialization.
+I have no idea if smaller RAM footprint of browser is noticeable.
+Despite some permissions are optional now,
+I do not think the add-on has become more safe.
+Multiple tabs and cross-origin frames scenarios still require most dangerous
+[[#access-your-data-for-all-websites-allurls][<all_urls>]].
+From my point of view, security model for browser extensions
+is still far from being consistent.
+Firefox version still uses Manifest V2 API due to bugs
+in mv3 implementation.
+I agree with the opinion that primary goal of forcing Manifest V3 API
+is to restrict ad blockers, not user safety.
+
 ** Introduction
 :PROPERTIES:
 :CUSTOM_ID: introduction