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\DeclareFieldFormat{edition}{%
\ifinteger{#1}{}{}}
\newbool{bbx:edsuper}
\DeclareBibliographyOption{edsuper}[true]{%
\csuse{bool#1}{bbx:edsuper}}
\DeclareFieldFormat{edition:super}{% für Option 'edsuper'
\ifinteger{#1}
{\textsuperscript{#1}}
{\blxdw@warning@noline{%
The 'edition' field of entry\MessageBreak
'\abx@field@entrykey' is not an integer.\MessageBreak
The edition will not be printed as\MessageBreak
superscript. Instead, the 'edition'\MessageBreak
field is printed completely}}}
renewbibmacro*{title}{%
\ifthenelse{\iffieldundef{title}\AND\iffieldundef{subtitle}}
{}
{\printtext[title]{%
\printfield[titlecase]{title}%
\ifthenelse{\iffieldundef{subtitle}}
{\printfield[edition:super]{edition}}
{\setunit{\subtitlepunct}%
\printfield[titlecase]{subtitle}\printfield[edition:super]{edition}
}%
\newunit
}%
\printfield{titleaddon}
}}