Exposed the arguments to gzcompress by adding public variables to the Zip library.
Updated changelog to include changes to the Zip Library.

Signed-off-by: garrettair <garrettair@gmail.com>
Updated Zip Library documentation to mention compression features.

Signed-off-by: garrettair <garrettair@gmail.com>
Another correction following #3384
Flag the smiley helper and shopping cart as deprecated.

They should be removed the next minor release.
Lowered the "javascript" deprecation message to "important" instead of "warning", for consistency with the rest of CI.
Signed-off-by:James L Parry <jim_parry@bcit.ca>
Merge pull request #3341 from garrettair/gzcompress-arguments

Adds Compression options to Zip Library
Zip library changes related to PR #3341

 - Drop compression_encoding option, it requires PHP 5.4.
 - Change default compression_level to 2 as this was previously the hard-coded default.
 - Improve on the doc changes made in the PR.
Merge pull request #3388 from jim-parry/fix/deprecation

Flag the smiley helper and shopping cart as deprecated.
[ci skip] Update on the changes from PR #3388

 - Fixed a broken link
 - Added missing notes about deprecations in the upgrade instructions
 - Improved consistency with other deprecation notices in the docs
[ci skip] Add changelog messages for Smiley helper and Cart library deprecations