Stacker for Sentences

[Georgio-Klironomos]

Background
The Sentence (Sent) and Prosodic Sentence (pSent) are important units for linguistic analysis. The Sentence (or Prosodic Sentence) consists of one or more Units, ending with an EndNote that is final (period) or appeal (question mark).

Describe what to do for the development of this feature

1. From the main menu, the user selects Stack > Create Stacks > StackType > Sentence
2. Rezonator present a dialogue box to the user, with the message:

• "Select a field (column) to use for creating Sentences"

3. The user selects the "EndNote" field (or we can do this for them by default, at least for the Santa Barbara Corpus).
4. The user is shown a dropdown menu of the Tags used in the "EndNote" field, with checkboxes next to each one:
   [ ] Continuing
   [ ] Final
   [ ] Appeal
   [ ] Break
5. By default, the following checkboxes are checked:
   [ ] Continuing
   [X] Final
   [X] Appeal
   [ ] Break
6. Stacker creates automatic Stacks (StackType = "Sentence". Each Stack consists of 1 or more Units, ending with a Unit that fits any of the following criteria:

• EndNote = Final
• EndNote = Appeal
• the Unit is the last Unit in the current Turn

Additional context
While this can be compared to the original Splitter Issue (#505), using the Stacker represents a very different strategy.
See #214

[Georgio-Klironomos]

@johnwdubois The mechanism for Stacking Sentences is working jst fine and has been user tested. All that's left is a pop-up allowing the user to select which endNote Tags to base the stacks off of.