Accumulated Rate of Change

This is a volatility indicator, inspired by ROC(Rate of change).

Shows three values:
- ROC, based on previous bar's price
- Accumulated ROC, shows price change rate since previous nth* bar. Both positive and negative price changes increases the rate.
- Accumulated Positive ROC, considers positive change rate only
- Accumulated Negative ROC, considers negative change rate only

* based on given number of bars in settings

릴리즈 노트:

Added the option to highlight background when positive and negative lines cross

릴리즈 노트:

Background color option improvements

릴리즈 노트:

Alerts added