Merge pull request src-d#749 from irias/master

plumbing: diff, fix crash when a small ending equal-chunk

Merge pull request src-d#720 from jfontan/improvement/cache-delete-mo…

…re-than-one-object

plumbing: cache, modify cache to delete more than one item to free space

Merge pull request src-d#710 from wellsjo/patch-1

fix typo

Merge pull request src-d#578 from erizocosmico/perf/reduce-gc-press

packfile: improve performance a little by reducing gc pressure

Merge pull request src-d#567 from strib/avoid-revlist-when-deleting

remote: avoid expensive revlist operation when only deleting refs

transport: fix ssh override config, fixes src-d#519

Merge pull request src-d#485 from mcuadros/fetch-tags

remote: fetch, correct behavior on tags

Merge pull request src-d#444 from silvertern/gitignore-ch2

Fixes checkout not possible with (untracked) files under gitignore

Merge pull request src-d#400 from ajnavarro/improvement/diff-delta

format/packfile: improve binary delta algorithm

removing import rule, to try to get godoc running