[dist] update levelup dep, [lib] all method calls update key-cache
[lib] path first
[doc] first arg is path to database
[lib] limit to some or explicitly all
[lib] adds a command to delete a range
[lib] less nesting of functions
[lib] output should always be JSON followed by \r\n
[lib] minor cleanup and output fix, [doc] update to readme
[test] tests updated
[doc] readme update
[fix] bug fix for when no path is specified
[dist] version bump
[fix] readstream should read all values on negative value
[dist] version bump
[lib] fix for key completion
[dist] version bump
[dist] version bump
[lib] better handling of encoding
[dist] version bump
[lib] args parsing fun