mathlig – Define maths "ligatures"

The pack­age de­fines char­ac­ter se­quences that “be­have like” lig­a­tures, in maths mode. Ex­am­ple def­i­ni­tions (cho­sen to show the pack­age's flex­i­bil­ity, are:\math­lig{->}{\rightar­row}\math­lig{<-}{\leftarrow}\mathlig{<->}{\left­rightar­row}