Change .view to .astype to fix test failure on python 2.7.5 and numpy 1.8.1
Merge pull request #88 from bsipocz/fix_findstar_tests

Change .view to .astype to fix tests on python 2.7.5 and numpy 1.8.1
No custom ImportError for missing optional dependencies
Change img_stats import
Removed commented out imports
Changing more .view to .astype
Merge pull request #79 from cdeil/optional-deps-handling

Handling of optional dependencies
Merge pull request #90 from larrybradley/fixissue89

Fix some imports
Merge pull request #91 from bsipocz/fix_findstar_tests

Changing more .view to .astype
Adding test for RectangularAperture
Remove unnecessary returns, and cleanup test
Adding test for masked aperture photometry