v4.5.0-RC1

• New Upgrade to Bootstrap 4.5.0
  Moved 4.4.1 to a new branch for those who need it
• New Ripple effect for buttons based on Luncheon awesome Ripplet.js
• Fixed Switch component is back !
• Updated webkit-custom icons as Google Chrome is updated with new icons
• Rework button's CSS
• Updated Roboto font URL
• Improving documentation to reflect BS 4.5.0 changes