chainladder 0.4.5

Bug Fixes:

• Fixed TailCurve shape misaligned #57
• Fixed triangle json serializers to include all data necessary to recreate triangle
• Fixed various edge case issues when len(development) == 1
• Fixed MackChainladder assymentric triangle support (e.g. OYDQ)
• Fixed MunichAdjustment assymentric triangle support (e.g. OYDQ)
• Fixed datetime flexibility on dataframe ingestion into triangle

Enhancements:

• aligned append method with pandas

Other:

• Moved excel exhibit functionality to a separate xlcomose package.