Pyarmor

* Introduce restrict mode to avoid obfuscated scripts observed from no obfuscated scripts
* Add option --disable-restrict-mode for command "config"

* Support install pyarmor by pip

* Fix Python3.6 issue: can not run obfuscated scripts, because it uses a 16-bit wordcode instead of bytecode
* Fix Python3.7 issue: it adds a flag in pyc header
* Fix option --obf-module-mode=none failed
* Add option --clone for command "init"
* Generate runtime files to separate path “runtimes" when project runtime-path is set
* Add advanced usages in user-guide

* Fix issue: raise exception when project entry isn't obfuscated

* Add webui to manage project

* Fix README.rst format error.
* Add title attribute to project
* Print new command help when option is -h, --help