added `compress` boolean on open()
leveldb 1.7
remove compile warnings for solaris
cleaner build for osx
allow JS Strings through to native layer

major speed boost here for all utf8 databases
revamped benchmark suite
added leveldb 1.7.0 source tarball
added no-compression benchmark engine
improved benchmarks
minor performance tweaks
slight C++ cleanup, giving in to macros, UGH!
added basic get() benchmarks
optimised encoders & decoders
return Strings not Buffers from C++ when possible
minor touchups
remove compile warnings on osx!
version bump
Merge branch '0.4.0-wip' of github.com:rvagg/node-levelup into 0.4.0-wip
added SQLite3 to test suite
updated benchmarks readme