TST/BUG: allow invalid Timestamps to pass thru as datetimes when operating with offsets
         related (GH5312)
Merge pull request #5327 from jreback/timestamp_offset

TST/BUG: allow invalid Timestamps to pass thru as datetimes when operating with offsets
CLN: Fix return type for initObjToJSON()
Merge pull request #5334 from jtratner/try-fix-for-initobjtojson

CLN: Fix return type for initObjToJSON()