v4.0.0-rc2

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