cls: use \ProvidesExplClass
cls: remove hyperref pdftex option
cls: polyglossia language specifier: ngerman -> german
cls: prevent expansion of \proofname

\proofname is set at document begin and might not be available earlier
cls: use fontspec and polyglossia

disabled other fonts for now
cls: disable \tilde, \hat redefinitions
cls: use \DeclareDocumentCommand instead of \newcommand
mk: new general tex.mk
mk: use new tex.mk
geo: use mycourse class
geo: use characters instead of \glqq, \grqq
cls: mywork: xetexified
mk: use new tex.mk
ana3: xelatexified
top: sectioning
top: comment on compact-open-topology