1.6.0

This release includes new and updated experimental functionality, as well as some internal updates.

Experimental Features

• #370 Implement a TopN (topn_agg) variant of our freq_agg
• #375 Add prototype gauge_agg and associated functions delta, idelta_left, idelta_right, rollup
• #368 Add into_values function for state_agg
• #330 improvements to freq_agg
• #351 Make serialize functions strict to handle NULL values in partitioned aggregates

Internal Improvements

• #332 #377 improve build and test scripts