Version history

Version 1.0
Function Added
   Version 1.1
Added comments to the script
   Version 1.2
Added CustomList requirement as extra custom function
   Version 1.3
Added link to download CustomList
Version 2.0
The function now returns a ΒΆ delimited list of the linear trend values, so it can be used for plotting in graphs.
   Version 2.1
updated demo text