Rework truncate.plist param so that it accepts a numerical input

[smjenness]

Instead of TRUE/FALSE, it would retain all partnerships that have stopped within X number of time steps. For example, if X was 12, then we would keep all active partnerships and those that have ended within the past 12 time steps. This will improve model efficiency.

[andsv2]

@smjenness for this would this supercede or compliment part.X.window parameter (part.X.window would at minimum be dependent on truncate.plist)?

EDIT: I believe the two parameters should work as such:

• If truncate.plist = X < Inf then there should be a check within param_msm to ensure that part.X.window <= truncate.plist for all input identification timings.
• If truncate.plist = Inf then part.X.window controls subsetting of eligible partnerships.

[smjenness]

Yes, there is a logical relation between these parameters, but you do not need to impose a restriction on the truncate.plist parameter in the code (this truncate.plist functionality may be used outside of the partner notification model we are building right now). So truncate.plist would neither supersede nor compliment (in the specific way that you have described above) part.X.window. Please verify this makes sense here, and then implement it.

[andsv2]

Yes that makes sense; the above would have been too restrictive. And thinking on it it isn't needed as a part.X.window greater than truncate.plist would just be default pulling everyone which is fine. Apologies for confusion.

[smjenness]

Closed with EpiModel/EpiModelHIV-p#38