v2.2.1: Update PRISim version to 2.2.1

From daa77da (master):
=====================

In prisim/__init__.py,

(*) Update PRISim version to 2.2.1

v2.0: Update example codes for BSP data demo re-submit

From d3592b0 (closure-adv):
==========================

In prisim/examples/codes/BispectrumPhase/,

(*) Update *.ipynb codes corresponding to the bispectrum phase data
analysis demo paper

v0.2-alpha: Add scripts/replicate_sim.py to repo

From 8696533 (master):
=====================

(*) Add prisim/examples/simparms/replicatesim.yaml to repo
(*) Add scripts/replicate_sim.py to repo

In prisim/interferometry.py,

(*) Add input datakeys in __init__() member function of class
InterferometerData. Update member function docstring accordingly
(*) In __init__() member function of class InterferometerData, only
set arrays for specified keys in input datakeys
(*) In member function write_uvfits() of class InterferometerArray,
add key 'datapool' to write only specified portions of the simulated
data to UVFITS file. Update member function docstring accordingly.
(*) In member function write_uvfits() of class InterferometerArray,
write only specified portions of the simulated data to UVFITS file.

In scripts/run_prisim.py,

(*) Pass datapool info in uvfits_parms before calling write_uvfits()
member function of class InterferometerArray