Minor fixes
Fix memory leak and segmentation fault in rare cases
Fix wrong crop option(-c) behavior
Merge branch 'master' into release-1.4
Merge branch 'hotfix-wrong-crop-behavior' into release-1.4
Update version
Merge branch 'master' into develop
Strip an unreached return statement
Minor style improvement
Merge branch 'develop' into release-1.4
Merge branch 'release-1.4'