Fix subtle bug in SBInterpolated fillKValues
(#442)
Improve Lanczos flux conservation by extending to higher order terms
(#442)
Add unit test for flux conservation
(#442)
Change spline references to use conserve_flux=False
(#442)
Change spline references to use conserve_flux=False
(#442)

Conflicts:
	devel/external/test_interpolant/.gitignore
	devel/external/test_interpolant/make_interpolant_comparison_files.py
	devel/external/test_spline/make_spline_testarrays.py
	devutils/external/test_spline/make_spline_testarrays.py
Back port boost bug fix 6854 to our bundled version.  (#222)
Make bundled boost/random work when native boost is 1.35
(#127)
Make reference files with conserve_flux=False
Merge commit '5d749338c6092f2f54d5f604eef977fba13c997c' into #442

Conflicts:
	devel/external/test_interpolant/make_interpolant_comparison_files.py
Record new commit for interpolant comparison files
(#442)
Move tests from test_spline.py into test_interpolated_image.py and recast as reference tests rather than spline tests
(#442)
Have OpticalPSF use InterpolatedImage, rather than a direct SBInterpolatedImage
(#442)
Make RealGalaxy use Quintic interpolants by default to match InterpolatedImage
(#442)
Merge branch 'master' into #442

Conflicts:
	galsim/optics.py
Clarify comment in Lanczos xCalc
(#442)
Some speed ups to Lanczos using trig identities to avoid multiple sin calls.
(#442)
add tests for n=4,6,8 to Lanczos conserve flux tests
(#442)
Simplify logic slightly in simReal
(#442)
Remove comment where I started trying to improve the uCalc calculation and aborted.
(#442)
conserve_flux -> conserve_dc
(#442)