1.9.0

• server: make it possible to override instanceId/prefix in RequestIdGenerator to support vendor-specific instance id headers, like FLY_ALLOC_ID
• server: metrics() now exposes RSS memory usage of the whole JVM process on Linux
• server: useHashCodeAsETag() now takes produces different ETags for different requested Content-Type, even if the content is the same
• json: report line numbers in JsonParseException for better debugging of json parsing errors
• json: make parser stricter according to the spec: disallow newlines inside of strings and unary plus
• json: increase JsonRenderer performance by ~10%
• oauth: OAuthUserProvider.initSession() can now be overridden to set additional session attributes
• jdbc: add @IgnorableReturnValue for some functions to avoid warnings when -Xreturn-value-checker is enabled
• jdbc: db.upsert() now takes uniqueFields as a Set instead of comma-separated string
• jdbc: use a dedicated connection in consumeNotifications() with a connLifetime parameter to avoid environment-specific timeouts
• jdbc: batch functions now take Iterable instead of Sequence because sequence is less efficient in practice (backwards-incompatible change, easy to fix)