• Fix issue: check license failed if there is no environment variable HOME in linux platform
• Add new value 3 for option --package-runtime, the bootstrap code will always use relative import with an extra leading dot
• The command runtime also generates bootstrap script pytransform_bootstrap.py
• Add option --inside in command runtime to generate bootstrap package pytransform_bootstrap
• Document how to run unittest of obfuscated scripts, refer to
  https://pyarmor.readthedocs.io/en/latest/advanced.html#run-unittest-of-obfuscated-scripts