version 1.9.0 in CHANGELOG, go.mod, README (#803)

CHANGELOG.md

@@ -18,7 +18,7 @@ This is a feature release:
  * Fix consumer close taking 10 seconds when there's no rebalance
    needed (@jliunyu, #757).
 
-confluent-kafka-go is based on librdkafka FUTUREFIXME, see the
+confluent-kafka-go is based on librdkafka v1.9.0, see the
 [librdkafka release notes](https://github.com/edenhill/librdkafka/releases/tag/v1.9.0)
 for a complete list of changes, enhancements, fixes and upgrade considerations.
 

README.md

@@ -126,7 +126,7 @@ for use with [Confluent Cloud](https://www.confluent.io/confluent-cloud/).
 Getting Started
 ===============
 
-Supports Go 1.11+ and librdkafka 1.6.0+.
+Supports Go 1.11+ and librdkafka 1.9.0+.
 
 Using Go Modules
 ----------------
@@ -218,7 +218,7 @@ with `-tags dynamic`.
 **Note:** If you use the `master` branch of the Go client, then you need to use
           the `master` branch of librdkafka.
 
-**confluent-kafka-go requires librdkafka v1.6.0 or later.**
+**confluent-kafka-go requires librdkafka v1.9.0 or later.**
 
 
 API Strands

examples/go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/alecthomas/kingpin v2.2.6+incompatible
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
-	github.com/confluentinc/confluent-kafka-go v1.8.2
+	github.com/confluentinc/confluent-kafka-go v1.9.0
 	github.com/gdamore/tcell v1.4.0
 	github.com/stretchr/testify v1.7.1 // indirect
 )

kafka/README.md

@@ -87,8 +87,7 @@ See instructions in [kafka/librdkafka/README.md](kafka/librdkafka/README.md).
 ### Update librdkafka version requirement
 
 Update the minimum required librdkafka version in `kafka/00version.go`
-and `README.md`.
-
+and `README.md` and the version in `examples/go.mod` and `mk/doc-gen.py`.
 
 ### Update error codes