be safe
Merge pull request #159 from libgit2/safer-signature

Don't crash if we end up with a NULL signature
update GTTree and GTIndex
don't use Contants anymore
spaces!!!!
adjective-ize
make the merge direction more clear
argh, another space
!=
Merge pull request #160 from libgit2/tree-fixes

Update GTTree and GTIndex
Bump to libgit2/libgit2#1564
Remove reference filtering, following git_reference_list()
Merge pull request #161 from libgit2/empty-name

Bump libgit2 for empty signature fix
Cloning should use GIT_CHECKOUT_SAFE_CREATE as a checkout strategy according to libgit2 docs
Merge pull request #162 from dmgctrl/master

Update clone checkout strategy to GIT_CHECKOUT_SAFE_CREATE
Add jspahrsummers/objc-build-scripts
Move old scripts into script/
Update build script paths in Xcode project
Set default targets in cibuild script
Remove now-invalid unit tests

See 540dd95d31e6a2ac939033b052607c907ea97936.