Release 3.5.1 Emergency release to fix compatibility with apk v3! Fixes: * pmb: drop unused import * pmb.helpers.apk: fix crash computing progress from apk3 * pmb.helpers.apk_static: fix version check for apk3 * pmb.helpers.repo: Always update APKINDEX if it doesn't exist * pmb.helpers.apk_static: Update "malicious server" message * export: allow to export vmlinuz files which have any suffix Other: * export: drop support for flavor in export Tests: * test: add small test for argument parsing