4.3     12 MAY 2014     New compressor options, new Mksquashfs/Unsquashfs
                        functionality, duplicate checking optimisations,
                        stability improvements (option/file parsing,
                        buffer/memory overflow checks, filesystem hardening
                        on corrupted filesystems), CVE fixes.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>