Update change log for startup and document controller changes

Update to upstream Sparkle

Update to upstream Sparkle

Merge branch 'magicseth-submodules'

Merge branch 'gitdir'

Fixes rowanj#26
Closes rowanj#86

Update objective-git to deal with re-pointed libgit2 submodule

Trying to find a good balance of distinguishing names

Remove deprecated calls to 'compositeToPoint'

Add notes about issue rowanj#63 to the change log

Fixes rowanj#63

Add pulls of upstream 3rd-party libraries to change log