chore: update version and CHANGELOG for 2.0.0.pre release

Author: eglitobias

CHANGELOG.md

@@ -1,3 +1,21 @@
+## 2.0.0 (in development)
+
+### Datadog Tracer Now Requires the `datadog` Gem
+
+The Datadog tracer now requires the [`datadog`](https://github.com/DataDog/dd-trace-rb) gem.
+Support for the deprecated `ddtrace` gem has been removed. ([migration guide](https://github.com/DataDog/dd-trace-rb/blob/master/docs/UpgradeGuide2.md))
+
+### Removed the `SentryRaven` Error Handler
+
+The `Hutch::ErrorHandlers::SentryRaven` error handler based on the EOL
+[`sentry-raven`](https://github.com/getsentry/raven-ruby) gem
+has been removed. Use `Hutch::ErrorHandlers::Sentry` (backed by `sentry-ruby`) instead. ([migration guide](https://docs.sentry.io/platforms/ruby/migration/))
+
+### Replaced `multi_json` With Ruby's stdlib `json`
+
+The `multi_json` runtime dependency has been removed. Hutch now uses
+Ruby's built-in `json` library directly.
+
 ## 1.4.0 (Apr 6, 2026)
 
 ### Ruby 3.0 is Now Required

lib/hutch/version.rb

@@ -1,3 +1,3 @@
 module Hutch
-  VERSION = '1.4.0.pre'.freeze
+  VERSION = '2.0.0.pre'.freeze
 end