Lading 0.30.0

This commit releases lading 0.30.0 with improvements to both the OTel
and Datadog native trace generators. Notably, lading now supports
configuration directories, allowing the lading configuration to be
split into multiple files. Merge semantics are carefully documented
in-line in project code, but essentially all merged files must not
overlap.

Signed-off-by: Brian L. Troutwine <brian.troutwine@datadoghq.com>

Author: blt

CHANGELOG.md

@@ -4,13 +4,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.30.0-rc0]
 ## Added
 - Lading now supports configuration directories. If the config path is
   discovered to be a directory lading will merge all .yaml files in that
   directory. Configuration files must be disjoint, else parsing will fail and
   lading will not start up.
-  
+
 ## Changed
 - Updated OpenTelemetry trace generator to generate more realistic traces: resource,
   scope, and attributes are populated, along with nested child spans.

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "lading"
-version = "0.29.2"
+version = "0.30.0-rc0"
 authors = [
   "Brian L. Troutwine <brian.troutwine@datadoghq.com>",
   "George Hahn <george.hahn@datadoghq.com>",