[feature] Detect change of spreadsheet files (csv, xls, etc)

[gety9]

Version and OS
For example, 0.46.04 on termux

Is your feature request related to a problem? Please describe.
I need to monitor changes on tables of data, often these tables are just displayed on web page, but sometimes site owners put this tables in file (most of the time csv, sometimes xls)
I see that CD.io already works for json & pdf, it will be great we can also add csv / xls capabilities.

Describe the solution you'd like
1, set watch with url with csv file
= CD.io detects changes

Comments
-, not sure if it's good idea, but we might want to convert csv/xls to json, this way we can re-use json "Filters" logic / functionality for spreadsheet files OR maybe even better we can use pandas filtering for "Filters".