Library "raf_BollingerBandsSqueezy"
B Bands with some squeese indicating additions
bbands_lines() Calcs BB Returns: the tree lines, upper, basis and lower
bbands_fast_ma() calcs the fast moving average, to be used to compare how prise is positioned against BB Returns: the fast EMA line, and the difference between it and the BB basis line
squeeze_bands_lines() calcs the "squeeze" bands Returns: the squeeze bands upper and lower lines