release: v0.9.8-rc1 required reviews

[materialize-bot]

The following PRs in v0.9.8-rc1 require review:

• #8535 update release issue template (@umanwizard)
• #8536 Prepare 0.9.8 dev (@umanwizard)
• #8553 doc: table should be codeblock (@msudberg)
• #8563 Continue 0.9.8 dev (@umanwizard)
• #8520 doc: Performance hit for setting Postgres tables to REPLICA IDENTITY FULL (@msudberg)
• #8567 Link security policy (@msudberg)
• #8577 [kafka-avro-generator] Let each distribution type have its own key/value schemas, and add a bigger records distribution (@umanwizard)
• #8581 [cloudbench] Add flags to print extra metadata, and to control which s3 bucket the results go to (@umanwizard)
• #8585 Add --distribution flag to avro_ingest.py (@umanwizard)
• #8586 Kick off the avro_ingest benchmark in the "periodic" CI test (@umanwizard)

[materialize-bot]

All PRs

• #8343 build(deps): bump rand_distr from 0.4.1 to 0.4.2 (@dependabot[bot])
• #8492 dataflow: track special float values during accumulation (@petrosagg)
• #8517 repr: reject year zero in YYYY-MM-DD date format (@andrioni)
• #8513 build(deps): bump ubuntu from focal-20210827 to focal-20210921 in /misc/ubuntu-base-image (@dependabot[bot])
• #8523 materialized: update support email (@uce)
• #8519 Fix rustfmt formatting glitch (@petrosagg)
• #8535 update release issue template (@umanwizard)
• #8536 Prepare 0.9.8 dev (@umanwizard)
• #8543 remove outdated/misleading comment in eos sinks (@elindsey)
• #8531 build(deps): bump dbt from 0.20.2 to 0.21.0 in /misc/dbt-materialize (@dependabot[bot])
• #8518 Adding a guide for MySQL CDC. (@morsapaes)
• #8530 sql: Detect underflow and overflow in floating point arithmetic (@cjubb39)
• #8477 sql: plan VALUES clauses via a table function (@benesch)
• #8553 doc: table should be codeblock (@msudberg)
• #8538 transform/fusion/union: use a post-order traversal instead (@asenac)
• #8554 persist: begin an abstraction for maintenance in a background threadpool (@danhhz)
• #8409 Convert LinearOperator to MapFilterProject (@frankmcsherry)
• #8542 reliable order of pushed down predicates (@asenac)
• #8560 pg-cdc: clamp limitless varchars to the correct limit (@petrosagg)
• #8563 Continue 0.9.8 dev (@umanwizard)
• #8552 Allow half_join to yield periodically (@frankmcsherry)
• #8520 doc: Performance hit for setting Postgres tables to REPLICA IDENTITY FULL (@msudberg)
• #8564 protoc: expose API to parse FileDescriptorSets more directly (@benesch)
• #8567 Link security policy (@msudberg)
• #8572 persist: move decoding to the consumers of listen streams. (@ruchirK)
• #8545 persist: add await_frontier() operator (@aljoscha)
• #8557 Push down Filter predicates through FlatMap instances (@aalexandrov)
• #8546 persist: add conditional_seal() operator (@aljoscha)
• #8489 persist: add persistent_upsert() operator (@aljoscha)
• #8577 [kafka-avro-generator] Let each distribution type have its own key/value schemas, and add a bigger records distribution (@umanwizard)
• #8539 dataflow/logging: Activate on data (@antiguru)
• #8580 Add a version check usable from cloud to the bug report instructions (@umanwizard)
• #8528 interchange: fix bug in grabbing first protobuf message name (@JLDLaughlin)
• #8581 [cloudbench] Add flags to print extra metadata, and to control which s3 bucket the results go to (@umanwizard)
• #8381 expr/MfpPlan: evaluate takes a row to build into (@antiguru)
• #8585 Add --distribution flag to avro_ingest.py (@umanwizard)
• #8586 Kick off the avro_ingest benchmark in the "periodic" CI test (@umanwizard)
• #8505 transform/union_cancel: precompute branch signs (@asenac)
• #8594 Add support for setting disable_user_indexes and name fields to mzcloud-cli (@alex-hunt-materialize)
• #8607 persist: make registering a listener and taking a snapshot atomic (@ruchirK)
• #8566 Refactor UPDATE/DELETE planning (@sploiselle)

[petrosagg]

All looks good