Update memtable to exhibit correct snapshot/sequencing behavior That is: Given an entry X with sequence numbers 1 and 4, looking it up with a sequence number of 3 should yield the value of X at 1, and looking it up at 0 should give a "not found".

[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"