SeaMonkey full changelog

SeaMonkey 2.53.19 contains (among other changes) the following changes relative to SeaMonkey 2.53.18.2:
Cancel button in SeaMonkey bookmarking star ui not working bug 1872623.
Remove OfflineAppCacheHelper.jsm copy from SeaMonkey and use the one in toolkit bug 1896292.
Remove obsolete registerFactoryLocation calls from cZ bug 1870930.
Remove needless implements='nsIDOMEventListener' and QI bug 1611010.
Replace use of nsIStandardURL::Init bug 1864355.
Switch SeaMonkey website from hg.mozilla.org to heptapod. bug 1870934.
Allow view-image to open a data: URI by setting a flag on the loadinfo bug 1877001.
Save-link-as feature should use the loading principal and context menu using nsIContentPolicy.TYPE_SAVE_AS_DOWNLOAD bug 1879726.
Use punycode in SeaMonkey JS bug 1864287.
Font lists in preferences are no longer grouped by font type, port asynchronous handling like Bug 1399206 bug 1437393.
SeaMonkey broken tab after undo closed tab with invalid protocol bug 1885748.
SeaMonkey session restore is missing the checkboxes in the Classic theme bug 1896174.
Implement about:credits on seamonkey-project.org website bug 1898467.
The following bugs were fixed in our branch of the Gecko source code only:
Fix for the 0.0.0.0 day vulnerability oligo summary.
Link in update notification does not open Browser bug 1888364.
Update ReadExtensionPrefs in Preferences.cpp bug 1890196.
Add about:seamonkey page to SeaMonkey bug 1897801.
SeaMonkey 2.53.19 contains (among other changes) the following major changes relative to SeaMonkey 2.49.5:
The Bookmarks Manager has switched its name to Library, and now also includes the History list. When History is invoked, the Library will be shown with the History list selected. The extensive modifications were needed because of Mozilla Gecko platform API changes.
Download Manager has been migrated to a new API. Although it looks pretty much the same as before, the search option is missing and some other minor details work differently. The previous downlo

Upstream libwebp security fix bug 1852749.
CVE-2023-4863: Heap buffer overflow in libwebp bug 1852649.
Fix bad string encoded in ansi. l10n fr problem only bug 1847887.

Fix macOS Contacts permission request
Remove SeaMonkey 2.57 links from debugQA
Treat opening urls from the library as external
Disable spam warning for autogenerated links in plaintext messages
Switch SeaMonkey build files to Python 3
Remove empty overlays from Composer
Move xpfe autocomplete to comm-central suite
Remove nsIPrefBranch2 and nsIPrefBranchInternal