• fix plumbing/difftree package name (#191)
• utils/fs: extract billy (#173)

Public API:

• remote: make Fetch atomic. (#185)
• remote: sideband support (#164)
• move plumbing from top level package to plumbing (#183)
• repository: Ref -> Reference; Refs -> References. (#168)
• file: return error on File.Contents() if reader fails (#150)
• rev-list command implementation for objects (#135)
• difftree: merkletrie internal package with iterator (#133)

Config:

• bare flag (#177)
• support delete refspecs (IsDelete). (#166)

Storage:

• filesystem, clean close when the packfile is not used (#140)
• shallow storage (#180)

Protocols:

• packp: add report status message. (#162)
• packp: add reference update request encoder. (#147)
• packp: add upload pack response message (#161)
• capabilities: implementation (#144, #151, #153, #170)
• sideband: muxer and demuxer (#143)

Formats:

• packfile: packfile write (#131)
• packfile: delta calculation (#182, #186, #172, #159)
• pktline: fix readPayloadLen err handling (#148)

Utils:

• fs: memory fix read offset
• fs: memory fix ReadDir, error getting filename

Transports:

• http: Add configurable http client factory (fixes #120) (#121)
• git: new git protocol (#175)
• ssh: keeping the original path (#189)
• local/ssh: add git-send-pack support (#163)
• local: add local transport (#145)
• create Client interface (#132)

Global:

• storage interface refactor (#112)
• new plumbing package (#118)

Fixes:

• utils/fs: add ReadAt to memory file and tests. (#122)
• format/packfile: Fix nil tx bug (#124)

Utils:

• utils/fs: Fix O_CREATE flag check in OpenFile src-d/go-git#116
• utils/fs: utils/fs: added test for open-read-seek src-d/go-git#117

Core

• added Blobs, Trees and Objects iterators to Repository src-d/go-git#114

Clients

• ssh: fix ssh client src-d/go-git#96

Formats

• packp: package advrefs encodes and decodes advertised references messages src-d/go-git#92
• packp: package ulreq encodes and decodes upload-request messages src-d/go-git#106
• index: added index format support src-d/go-git#91 src-d/go-git#105
• config: package to encode, decode and manipulate git config files src-d/go-git#97

Utils

• binary: new package that collect all the spare helper functions about binary operations src-d/go-git#102
• fs: move 'os' and 'test' to separate packages src-d/go-git#93
• fs: add Remove() src-d/go-git#94
• fs: add OpenFile method to filesystem interface src-d/go-git#104
• fs: new memory file system src-d/go-git#108

• add simple difftree implementation (#63)
• avoid panic if repository is not specified (#79)
• fix sourcegraph/go-vcsurl (#66)
• fix decode tree bug: incomplete reads break the decoding process (#64)

API changes:

• changed repository.Commits(): now it also returns an error.
• changed repository.Tags(): now it also returns an error.
• new function: repository.NewRepositoryFromFS(fs, path) creates go-git repositories from .git directories on disk, although, the filesystem is an interface that can be implemented to access git repositories stored anywhere in any format.

• Fixed annoying underflow errors