Select and Export historical sentiments #4
Description
v1.3 of the Apple version of Snse allows the user to select all, or specific, historical sentiments and export them to a .json file -- that is the killer feature for v1.3.
The multi-select behavior in the Gmail Android app is to long press on one row to enter "selection mode", then touching anything will add to selection list. Here is totally how to handle the presenting "selection mode": https://github.com/BlakeBarrett/betterup-interview-android-blake-barrett/blob/master/app/src/main/java/co/betterup/betterfeed/ArticleFragment.kt#L74-L105
Then export to JSON file.
Need Unit Tests to validate JSON is compatible with output of the Apple version of Snse.