Implement "strongly" typed keys. LevelDB uses different key formats in different modules; by introducing typedefs, we achieve at least better documentation about which key types are used where.

[package]
name = "leveldb_rs"
version = "0.1.0"
authors = ["Lewin Bormann <lbo@spheniscida.de>"]

[dependencies]
crc = "1.2"
integer-encoding = "0.12.0"
libc = "0.2"
rand = "0.3"