Merge branch 'hotfix/fix-composer.json'
refactor
fix autoloader
refactor sample
refactor Printo
detect recursion
use print_a
Merge branch 'release/0.1.2'
Revert "refactor sample"

This reverts commit f8c46267ff2c07c53385b2899af3e64b99aaac6f.
use var_dump
use mindmap.css
update css/js