chainladder 0.8.0

Enhancements

• #112 Advanced groupby support.
• #113 Added reg_threshold argument to TailCurve for finer control of fit. Huge thanks to @Brian-13 for the contribution.
• #115 Introducing VotingChainladder workflow estimator to allow for averaging multiple IBNR estimators Huge thanks to @cbalona for the contribution.
• Introduced CaseOutstanding development estimator
• #124 Standardized CapCod functionality to that of Benktander and BornhuetterFerguson

Bug Fixes

• #83 Fixed grain issues when using the trailing argument
• #119 Fixed pickle compatibility issue introduced in v0.7.12
• #120 Fixed Trend estimator API
• #121 Fixed numpy==1.20.1 compatibility issue
• #123 Fixed BerquistSherman estimator
• #125 Fixed various issues with compatibility of estimators in a Pipeline

Deprecations

• #118 Deprecation warnings on xlcompose. Will be removed as a depdendency in v0.9.0