update test
Merge branch 'origin/3.5.2'

Conflicts:
	iOS/tests/JSONAbsent/JSONAbsent.xcodeproj/project.pbxproj
	iOS/tests/JSONAbsent/JSONAbsent.xcodeproj/xcshareddata/xcschemes/JSONAbsent.xcscheme
add tests
add tests
Merge branch 'origin/3.5.2'