changed version from pre to dev
changed version from pre to dev

carlthome/librosa,Cortexelus/librosa,stefan-balke/librosa,Cortexelus/librosa,craffel/librosa,ruohoruotsi/librosa,r9y9/librosa,craffel/librosa,stefan-balke/librosa,ruohoruotsi/librosa,Cortexelus/librosa,craffel/librosa,r9y9/librosa,stefan-balke/librosa,r9y9/librosa,carlthome/librosa,ruohoruotsi/librosa,carlthome/librosa