TMB Levels

Description:
Improved "Hourly Midline" indicator. It displays high, middle and low levels of every candle with specified timeframe (can be hourly, daily, or any other timeframe). You can change the source for the levels (either high and low of candle, or open and close of candle). Additionally, you can turn on the "Line chart", which essentially connects every midline, making a line chart of middle prices.

Parameters:
- Timeframe -> use data from this timeframe ("30" would mean 30 minutes, "60" would mean 1 hour, etc.)
- Source -> source for calculating the middle level
- Top -> parameters of the top level lines
- Middle -> parameters of the middle level lines
- Bottom -> parameters of the bottom level lines
- Line chart -> connect every midline, making a line chart