Allow schema version to be specified as zero; we just pass this through to Database.createTransaction().
Allow schema version to be specified as zero; we just pass this
through to Database.createTransaction().

permazen/permazen,permazen/permazen,tempbottle/jsimpledb,tempbottle/jsimpledb,archiecobbs/jsimpledb,mmayorivera/jsimpledb,archiecobbs/jsimpledb,gmsconstantino/jsimpledb,tempbottle/jsimpledb,archiecobbs/jsimpledb,gmsconstantino/jsimpledb,mmayorivera/jsimpledb,permazen/permazen,mmayorivera/jsimpledb,gmsconstantino/jsimpledb