zlibnet package is no longer used.

zlib/changes.txt

@@ -1,25 +0,0 @@
-v1.3	june 2013
-Upgrade zlib to 1.2.8
-Make custom build v1.2.8.1 where 1 bugs fixed: Incorrect move method was sent to SetFilePointer.
-Fix bug where utf8 flag was not set correctly.
-Change UTF8Encoding to default true.
-Support unicode in filename of zip itself.
-
-v1.2	6.may 2012
--Upgrade zlib to 1.2.7
--Change Zip64 option to enum (Yes,No,Auto) where Auto now is default (was No)
-
-v1.1	6.jan 2011
-Fixed bug: If Unzipper.ItemList had more than one entry, unzip would not work (exctracted files would try to overwrite themself)
-
-Update zlib dlls to custom build v1.2.5.1 where 2 bugs fixed:
--Adding over 64k number of entries in zip with total size below 4GB created invalid zip
--Writing entries over 4GB with zip64=false did not fail but created invalid zip 
-
-Misc:
-Convert unsafe code to safe code.
-Wrap CloseCurrentEntry in try/finally block: we must always CloseFile, even if CloseCurrentEntry fails.
-Zip64 zipping works now.
-
-v1.0
-Initial release