1.16.0

Bug fixes

• #733: Fix a bug when rolling up overlapping heartbeat_aggs
• #740: When interpolating an 'locf' time weighted average, extend last point to interpolation boundary
• #742: Ignore incoming NULL values in hyperloglog rollup

Stabilized features

• #741: Stabilize approx_count_distinct
• #748: Stabilize approx_percentile_array
• #745: Stabilize date utility functions
• #751: Stabilize min_n/max_n/min_n_by/max_n_by
• #752: Stabilize mcv_agg, this was previously our topn_agg

Other notable changes

• #743: Remove support for direct upgrades from toolkit versions more than 1 year old. Toolkit versions 1.4.x and 1.5.x will have to upgrade to an intermediate version before upgrading to 1.16.0.
• #744: Fix nightly CI failures from building TimescaleDB on Enterprise Linux
• #749: Added num_live_ranges, num_gaps, and trim_to accessors for heartbeat aggregates

Full Changelog: 1.15.0...1.16.0