- created build/scss/plugins/_mixins.scss
- updated build/scss/plugins/_select2.scss
- added color variation for select2
- updated build/scss/AdminLTE(-raw).scss
- updated pages/forms/advanced.html with color variations and both themes

- added min-height update for login-/register-page in Layout.js
- updated login-/register-page to display flex
- updated login/register demo to load adminlte.min.js

- added demo in pages/UI/navbar.html
- added style for top border for .card-outline-tabs
- overhauled a bit the navbar demo section

- split Plugins in Plugins & DocsPlugins
- created docs-prepare & install npm script
- renamed prepare npm script to prepare-release
- updated .npmignore

- button text size
- dropdown text size
- dropdown toggle icon alignment
- top-nav brand image margin
- added docs part

- created Toasts.js
- updated build/js/scss/plugins/_toastr.scss
- added toast-variant mixin in build/scss/_mixinis.scss
- created build/scss/_toasts.scss
- added zindex-toasts variable in build/scss/_variables.scss
- updated build/scss/AdminLTE.scss & build/scss/AdminLTE-raw.scss
- updated pages/UI/modals.html
- created docs/javascript/toasts.md
- updated docs/_config.yml

- updated package.json
- updated build/npm/Plugins.js
- added build/scss/plugins/_bootstrap-switch.scss with bootstrap 4 style & color overrides
- updated pages/forms/advanced.html with bootstrap switch demo & added rows in icheck demo
- added plugins files

- added active override for .btn.bg-*
- added radio button group demo in pages/UI/buttons.html

- created pages/examples/pace.html
- created build/scss/plugins/_pace.scss with color overrides
- created docs/components/plugins.md with plugin overrides & extra styles
- updated docs sidebar menu
- updated demo sidebar menu with pace demo link