Fix the scons build for bug in scons <= 2.0.
Correct oversight error in test_shear.py
part way through adding the COSMOS noise to the real galaxy padding, but something seems to be up with the scaling of the variance in real.py... this no longer seems to be happening.
(#389)
some preparations for tagging v0.5
(#439)
changelog, history updates post-tag of v0.5
merged master into this branch
(#389)
added override_var keyword to the InterpolatedImage class and buildNoiseImage helper function
(#389)
updated the behaviour of override_var to not override noise_pad = 0.
(#389)
updated real.py to update the padded noise with the override_var value from real_galaxy_catalog.variance[use_index]
(#389)
first pass at noise padding with COSMOS noise for the config, need to test
(#389)