Appman-packager allows creation of inconsistent packages

As written in documentation, there are two package formats supported at the moment.

When giving info.yaml file with old format, appman-packager creates inconsistent package (header and footer of new format, but info.yaml of old format).

Expected behavior - either fail creation of the package, or create old format package.

Tested with this info.yaml:

formatVersion: 1
formatType: am-application
—
id: 'com.luxoft.android'
icon: 'icon.png'
code: 'main.qml'
runtime: 'qml'
runtimeParameters:
importPaths: [ '.' , "./imports"]
environmentVariables:
SCRCPY_SERVER_PATH: "scrcpy-server.jar"

name:
en: 'Android'

categories: [ 'app' ]