bump version number to 0.4.6
bump version number to 0.4.6

Venemo/node-lmdb,lukas-zech-software/node-lmdb,lukas-zech-software/node-lmdb,lukas-zech-software/node-lmdb,lukas-zech-software/node-lmdb,Venemo/node-lmdb,Venemo/node-lmdb