[LMDB] New product using LMDB

Hello all,

I would like to introduce another product/tool that is based on LMDB and might be useful to some. Enter "LightningObjects", the High Performance embedded C++ Object Storage solution. LO is a template based mapping layer that turns LMDB (or any other key/value store that can be adapted to the internal abstract storage API) into a transactional C++ object store. Code is available at https://github.com/gsvitec/lightning-objects. Currently in alpha state, but used in a large commercial project already. I look forward to anyone's comments.

regards, Christian Sell