table_reader: Clean up TableIterator implementation: Store optional current_block. This should have been done earlier, but seemed to complicated; after some proper restructuring of the implementation it now makes more sense overall.

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

[dependencies]
crc = "1.2"
integer-encoding = "1.0"
libc = "0.2"
rand = "0.3"
time-test = "0.2"