Maven: change release number to 2.0
Maven: change release number to 2.0

jankotek/mapdb,jankotek/mapdb,hangum/mapdb,SleimanJneidi/mapdb,binarytemple/mapdb,cocosli/mapdb,jankotek/MapDB,ringoluo/mapdb,sumit784/mapdb,lamfire/mapdb,pettermahlen/mapdb,ffjiao/mapdb,morfeo8marc/mapdb,jankotek/MapDB,codeaudit/mapdb