Notable changes

ZIO

• Deprecate const in favor of as and add asError in ZIO and all data types (#1315) by @ioleo
• Deprecate succeedLazy in favor of effectTotal (#1377) by @ioleo
• Add ZIO#cached (#1361) by @adamgfraser
• Ignore extra callback calls in ZIO#effectAsync (#1402) by @ghostdogpr
• Add ZIO#catchSomeCause (#1387) by @mschuwalow
• Add ZIO#collectAllSuccesses and variants (#1237) by @mtsokol
• Improve extension method support for ZIO (#1481 and #1444) by @NeQuissimus and @jeremyrsmith
• Add ZIO#provideM (#1522) by @adamgfraser

Stream

In this release, the internal representation of ZStream has been vastly simplified to an effectful, scoped iterator. This representation, besides being simpler to write combinators and constructors for, should result in improved performance and less GC pressure. Please report any issues you notice!

• Add ZSink#zipPar (#1344) by @simpadjo
• Add ZSink#collectAllN and variants for grouping elements into n-sized lists, sets, maps (#1362) by @PawelGizka
• Add ZStream#interleave, ZStream#interleaveWith and ZStream#combine for merging of streams (#1355) by @adamgfraser
• Add ZStreamChunk#collect (#1379) by @shankarshastri
• Add ZStream#broadcast, ZStream#groupBy, ZStream#partition, ZStream#timeout and other variants (#1387) by @mschuwalow
• Add ZStream#catchAll, ZStream#mapError, ZStream#provide and variants (#1427) by @iravid
• Refactor of ZStream internals by @iravid and @vasilmkd
• Add ZSink#splitLines (#1384) by @iravid
• Add ZStream#zipWithLatest, ZStream#fixed, ZStream#schedule and variants (#1482) by @regiskuckaertz

ZIO Test

• Support for sbt (#1335) by @dkarlinsky
• Add Gen combinators for property-based testing (#1356) by @adamgfraser
• Rename Assertion to AssertResult and Predicate to Assertion (#1500) by @adamgfraser
• Add combinators for composing assertions (#1438) by @adamgfraser

STM

• Add support for ScalaJS (#1338) by @heraklos
• Add TArray (#1191) by @LGLO

Cause

• Add Cause#untraced that removes all tracing information from a Cause (#1354) by @shankarshastri