annogen browser extensions work around Firefox issue that can cause all text in startup page to say undefined

annogen browser extensions: call it annotate-dat.txt instead of data.txt to avoid confusing Firefox reviewers

annogen browser extensions: split off data to separate file + avoid Function constructor, innerHTML & outerHTML (to meet Firefox store requirements)

annogen: avert js-utf8 NFD issues; fix js zlib copyP-desync regression but warn about unresolved JS zlib issues

annogen: avert js-utf8 NFD issues; fix js zlib copyP-desync regression but warn about unresolved JS zlib issues

annogen fix post-normalise yarowsky glitch + add opcode compaction to Python runtime (helps debug others)

annogen Android apps: a Clear box appears when URL is auto-pasted to start screen; fix release-notes publishing

bookmarklet JS and Android app: catch lingering cross-domain exceptions in the scan for updated content

annogen Android fix missing EPUB controls on recent versions of Android that return non-null MIME type for xhtml

annogen Android apps: fix WebView crash on some 5.1 tablets (black screen shortly after startup) due to some JS injection not being on UI thread

annogen Android apps: fix for Android 4.3 and below crashing Back button bug introduced in v0.6594 May 2019