* IOSAD-191: (63 commits)
  IOSAD-191 Delete PEPObjCAdapterTypesTests_macOS target.
  IOSAD-191 Move pEpMessageWithAllFieldsFilled to PEPTypesTestUtil.
  IOSAD-191 Move pEpLanguageWithAllFieldsFilled to PEPTypesTestUtil.
  IOSAD-191 Small refactor for code review.
  IOSAD-191 Delete PEPMessageTest and PEPAttachmentTests. Add PEPMessage+SecureCodingTest tests. Delete some unused code. some refactor.
  IOSAD-191 Delete PEPAttachmentTest.
  IOSAD-191 Add PEPAttachment_SecureCodingTest tests.
  IOSAD-191 Delete PEPLanguageTest and PEPLanguageTests. Add PEPLanguage+SecureCodingTest tests.
  IOSAD-191 Delete PEPIdentityTest.
  IOSAD-191 Create PEPTypesTestUtil. Add PEPIdentity+SecureCodingTest tests.
  IOSAD-191 Refactor some code.
  IOSAD-191 Delete some unnecessary code. Refactor.
  IOSAD-191 Reorganize PEPObjCAdapterTypesTests test files.
  IOSAD-191 Add PEPMessage iOS tests.
  IOSAD-191 Add PEPAttachment iOS tests.
  IOSAD-191 Add PEPLanguage iOS tests. Delete PEPObjCAdapterTypesTests_iOS file.
  IOSAD-191 Add PEPIdentity iOS tests.
  IOSAD-191 Add PEPObjCAdapterTypesTests_iOS target.
  IOSAD-191 Add isEqual to PEPAttachmentTest. Add PEPMessage tests.
  IOSAD-191 Create PEPMessageTest.
  ...

* 1.1.250: (43 commits)
  updates readme to use GIT Engine repo
  IOS-2628 0 attachments
  IOS-2628 Deal with "no attachment"
  IOS-2628 Workaround empty bloblist
  IOS-2628 Test for 0-length attachments
  IOS-2628 Test for attachments in self-encrypt
  IOSAD-186 updates readme
  IOSAD-186 fixes: crashes at runtime under iOS12 using [NSObjcect new] (alloc init worked, crazy)
  IOSAD-186 rm scheme for framework that does not exist any more
  IOSAD-186 rm needless import
  IOSAD-186 fixes: session always NULL due to system.db not found
  IOSAD-186 adds fogotten files to pEp4iOS target
  IOSAD-186 rm needless import
  IOSAD-186 renames Sample App
  IOSAD-186 used old sample app
  Revert "IOSAD-186 cleanup"
  IOSAD-186 cleanup
  IOSAD-186 adds more complex test case to sample app (to reproduce linking problems with code from ewxtensions)
  IOSAD-186 fixes: extentions not linked usoing static lib. Fixed by adding -objc LF to clients build settings
  IOSAD-186 adds certain files have not been added to the pEpObjCAdapter_iOS target.
  ...

This reverts commit 1a9ffc1753.