Allow unemp params to be None

[Mv77]

My PR #1112 broke some outside functionality (DemARKs and some of @llorracc 's private scripts).

The crux appears to be that UnempPrbRet and related parameters can sometimes be None. This PR edits the income process constructor to accept that.

• Tests for new functionality/models or Tests to reproduce the bug-fix in code.
• Updated documentation of features that add new functionality.
• Update CHANGELOG.md with major/minor changes.

[Mv77]

Does this need a change-log given it is a fix?

[Mv77]

Allowing it to take integers now too.

Doing this because I assume not taking them might break remarks. I thought those were pinned to specific HARK versions so they would not break. My bad.

[llorracc]

Doing this because I assume not taking them might break remarks. I

thought those were pinned to specific HARK versions so they would not break. My bad. Well, those that are "published" are pinned to specific HARK versions. Some others are not published. And, even for the "published" ones, if someone wants to try them out with newer versions of HARK, it's better if we can reduce opportunities for breakage.

…

On Wed, Feb 23, 2022 at 11:02 PM Mateo Velásquez-Giraldo < ***@***.***> wrote: Allowing it to take integers now too. Doing this because I assume not taking them might break remarks. I thought those were pinned to specific HARK versions so they would not break. My bad. — Reply to this email directly, view it on GitHub <#1119 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAKCK73RT44AVM72KVT2XYTU4WUVBANCNFSM5PGHOUOQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- - Chris Carroll

[codecov-commenter]

Codecov Report

Merging #1119 (bf56f60) into master (413e6d6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1119   +/-   ##
=======================================
  Coverage   73.83%   73.83%           
=======================================
  Files          69       69           
  Lines       10636    10636           
=======================================
  Hits         7853     7853           
  Misses       2783     2783           

Impacted Files	Coverage Δ
HARK/ConsumptionSaving/ConsIndShockModel.py	85.82% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 413e6d6...bf56f60. Read the comment docs.