* 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.
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