Merge pull request #21 from toshi-ara/dev

improve layout / drop serviceworker

Merge pull request #20 from toshi-ara/dev

fix

Merge pull request #18 from toshi-ara/dev

fix-bug001: set parameters when deleted by Quit button

Merge pull request #14 from toshi-ara/pwa

Progressive Web Apps

Merge pull request #13 from toshi-ara/dev

use Box-Muller transform

Merge pull request #12 from toshi-ara/dev

refactoring

Merge pull request #11 from toshi-ara/dev

use => instead of .bind(this)

Merge pull request #10 from toshi-ara/dev

refactoring / modify parameters

Merge pull request #9 from toshi-ara/dev

refactoring using class for timer and drug parameter

Merge pull request #8 from toshi-ara/dev

rewrite constant value / labels using class