added read_arrayinfo function and some documentations for RedundantCalibrator
modified importuvs to include the transpose to make data from txpxbxf to pxtxfxb
fixed issue that causes test.py to fail on different systems, and a few cosmetic bugs. it was caused by phase calibration parameters not being nan when all the input data slice are 0 or -0.
implemented apply_calpar() and incoorporated into test.py
Merge branch 'Eric'
merged Eric branch into master and attempted to incoorporate compute_redundantinfo(), but not successful. Currently test.py still passes succesffully, but not using compute_redundantinfo()
changed arrayinfo_PAPER32.txt to arrayinfo_apprx_PAPER32.txt which has approximated antlocs for paper32
added back arrayinfo_PAPER32.txt