ObjFW  History of src/exceptions/OFWriteFailedException.h of ceee745736083f7d

Instead, explicitly declare them, as OF_ASSUME_NONNULL_{BEGIN,END} does
not apply to implicit return types. This means that after this commit,
all init methods have a nonnull return type, as they should have. file: [38908fcba9] check-in: [2f4e0df8be] user: js, branch: trunk, size: 2672 [annotate] [blame] [check-ins using] [diff]

This allows retrieving the number of bytes already written before the
write failed, allowing to retry without writing data that has already
been written. file: [63e6e7e007] check-in: [2ae01218ef] user: js, branch: trunk, size: 2637 [annotate] [blame] [check-ins using] [diff]

Forgot to add 2017, even though I already did quite some changes in
2017. file: [3548bb003a] check-in: [44f45c2e35] user: js, branch: trunk, size: 867 [annotate] [blame] [check-ins using] [diff]

While at it, also update the mail address. file: [b2b127566a] check-in: [2a27cf3000] user: js, branch: trunk, size: 861 [annotate] [blame] [check-ins using] [diff]

This is in preparation for adding UDP sockets, as UDP sockets and TCP
sockets have no common superclass, as one is stream-oriented while the
other is packet-oriented.

Read and write exceptions are for any object now, as they are useful for
a lot more than just for streams, while the others (bind, listen, etc.)
are for any socket now (the type is id in this case, though, as there is
no common superclass). file: [be49e51e6a] check-in: [8d2a5052fd] user: js, branch: trunk, size: 752 [annotate] [blame] [check-ins using] [diff]