v0.5.2

Quiqbox v0.5.2

Diff since v0.5.1

Merged pull requests:

• 0.5-Doc Dev (#108) (@frankwswang)
• 0.5-Doc Dev (#109) (@frankwswang)
• Updated Julia REPL's link. (#110) (@frankwswang)
• 0.5-Improvement Dev (#111) (@frankwswang)
• 0.5-Optimization Dev (#112) (@frankwswang)
• 0.5-Optimization Dev (#113) (@frankwswang)
• Added .saveTrace to POconfig and changed the output of optimizeParams!. (#114) (@frankwswang)
• 0.5-Optimization Dev (#115) (@frankwswang)
• Updated the docstring. (#116) (@frankwswang)