Add #define to avoid clang warning for some recent boost versions
Merge branch 'master' into #364
Change the text about only using the sky variance in the weight_image to be hopefully less controversial.
(#364)
Remove TPV from WcsTools test, since it isn't working in Mavericks for some reason.
(#364)
Implement Barney's idea about colon in hms, dms strings
(#364)
Let xValue and kValue in python take the same variety of arguments that we allow in other places
(#364)