extract compression level of the zip to a constant
extract compression level of the zip to a constant

this is used so that if we want to change it a single value can be modified

Signed-off-by: Sam Phippen <e5a09176608998a68778e11d5021c871e8fae93c@googlemail.com>

jmorse/cyanide,jmorse/cyanide,jmorse/cyanide,jmorse/cyanide