Version 0.11 Release Candidate 1

• Compatibility: Compatible with Thunderbird 68, 78 and probably all beta versions in-between.
• Compatibility: No longer compatible with Seamonkey 1.x, Toolkitized Seamonkey (2.x)
• Compatibility: No longer compatible with Thunderbird 30...67.
• Fix: Was using an identifier instead of a string, messing up some of HTML message composition support
• Fix: Was missing an XHTML sub-namespace for the preferences/
• Fix: Issues mostly (wholly) resolved the issues with setting the direction in new messages.
• Fix: Now properly accounting again for the message subject in direction detection, and setting its direction again.

Internal changes (no user visibility):

• No longer using JARs within the XPI
• Reworked the directory structure
• Dropped some files only in use by previous TB versions (but not all files for now)
• Using John Bieling's privileged extension loader, from here; see this guide regarding how to use it.
• Now using service getters provided by Services.jsm and MailServices.jsm whenever possible.
• Now logging using a plain and simple console.log().
• Fix: Was adding stylesheets to documents as children of the root element rather than the head element.
• Fix: Now creating non-XUL for style elements for appending rules without a link.
• Fix: Passing correct parameters to reply-body direction detection.
• Fix: No longer using editor.setParagraphFormat().
• Fix: No longer using the now-gone interface nsIEditorStyleSheets to append stylesheets.