• Add external plugin script assert_armored.py
• Enhance the command licenses:
  • The final argument could be empty, for example, pyarmor licenses will generate a default license to licenses/pyarmor/license.lic
  • If the output is end with license.lic, it will not append any other path, just save it as it is. For example, pyarmor licenses -O dist/license.lic will save the final output to dist/license.lic
  • Add new option --fixed, and document how to use this option to improve the security
• In command pack, the default license will be generated with --fixed to improve the security