Premarket High/Low

The script draws the high and low of the premarket session and based on these levels the ATR is added and also displayed on the chart as lines.

You can change:
- The Session Timeframe
- The ATR Multiple
- If the Aftermarket Session should be included

リリースノート:

Changes:

• Fix in Aftermarket Time Session. Works now correctly.
  
• ATR Multiple can be float numbers (0.5, 0.7, 1.5)