Bump deployment target to 10.10 (#534) * Perform Xcode 10.2 modernization * Update deployment target to 10.9 * Fixes libgit2 reference in GitUpKit for iOS * Make all targets use shared config * Adopt base localization * Update the tools used to build on CI * Adopt guarded availability checking * NSViewController is part of the responder chain after 10.10 * NSViewController has native appearance callbacks after 10.10 * Fix trivial warnings * Update deployment target to 10.10 |