Adding flux weighting option to the effective_area function of Weighter objects #236

All 103 tests pass, 1 skipped in 2m 24s

6 files + 6 6 suites +6 2m 24s ⏱️ + 2m 24s
104 tests +104 103 ✅ +103 1 💤 +1 0 ❌ ±0
624 runs +624 618 ✅ +618 6 💤 +6 0 ❌ ±0

Results for commit 68f0c5e. ± Comparison against earlier commit 09eb1a1.