Update CHANGELOG.md

Signed-off-by: Travis Sikes <[email protected]>

CHANGELOG.md

@@ -6,11 +6,12 @@ Development
 
 * Allow identical observations to not raise exception for daily model in `linear_fit`.
 * Handle ambiguous and nonexistent local times when creating billing dataclass 
-* Fix serialization and deserialization of metrics.
+* Fix serialization and deserialization of hourly CalTRACK metrics.
 * Rename HourlyBaselineData.sufficiency_warnings -> HourlyBaselineData.warnings
 * Add disqualification field to HourlyBaselineData and HourlyReportingData
 * Fix bug where HourlyBaselineData and HourlyReportingData wasn't actually NaNning zero rows when `is_electricity=True`.
 * Constrain eemeter daily model balance points to T_min_seg and T_max_seg rather than T_min and T_max.
+* Fix bug in `linear_fit` due to SciPy's `theilslopes(y, x)` not following the same order as `linregress(x, y)`
 
 4.0.7
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