add GitIndexEntry
add repository_pack tests
add test helper for git index tests
add git clear
add index read/write
export new functions
add GitIndexEntry, update index constants
index passes first test
add remove, and remvoe_dir to index
update GitIndexEntry
hacks to get index entry type to pass tests
add entry and getentry now pass initial tests
implement iterable interface for index
add getindex path for git index
add write index test
Merge pull request #1 from jakebolewski/index

Index