Add Psy Shell v0.9 support

Fixed issue #41: Upgrade tinker to the latest version?

Fix tinker command <include> script error

Fixed issue #37: php artisan tinker command got warning: PHP Warning: include(): Filename cannot be empty on line 55.

Fix Lumen v5.6 compatibility

Fixed issue #38

Tinker command add <include_script> parameter support

Usage: php artisan tinker path/to/tinker/script.php

Fix artisan serve error

Fix issue #32 Failed opening required 'server.php'.

Lumen v5.6 compatibility

• Fix "Call to undefined method Symfony\Component\Process\ProcessUtils::escapeArgument()" error,
  when running php artisan serve command

5.5.1

Fix test.stub class namespace error.
Add --markdown option to make:mail console command.

Lumen v5.5 compatibility

5.4.4

Add `make:test` command

Like in Laravel, now you can generate your Unit Test file in Lumen Based App.