v1.6.0 - Add Buffered Output

What's Changed

• Display values are kept in persistent buffer for easier updates.
• Fix colon and decimal display for flipDisplay(true) conditions ( see #18 )
• setBrightness() immediately updates brightness level (no data refresh needed) by @stef-ladefense in #20
• flipDisplay() immediately flips current display (no data refresh needed)
• readBuffer() returns current display segment values

New Contributors

• @stef-ladefense made their first contribution in #20

Full Changelog: v1.5.2...v1.6.0