chore: Prepare for major release. (#138)

Author: kinyoklion

README.md

@@ -3,9 +3,6 @@
 This repository contains LaunchDarkly SDK packages which are written in C++.
 This includes shared libraries, used by SDKs and other tools, as well as SDKs.
 
-This repository contains beta software and should not be considered ready for production use while this message is
-visible.
-
 ## Packages
 
 | Readme                                       | issues                                      | tests                                                   | docs                                                                                                                                                                           |

libs/client-sdk/README.md

@@ -1,9 +1,6 @@
 LaunchDarkly Client-Side SDK for C/C++
 ===================================
 
-This SDK is a beta version and should not be considered ready for production use while this message is
-visible.
-
 [![Actions Status](https://github.com/launchdarkly/cpp-sdks/actions/workflows/client.yml/badge.svg)](https://github.com/launchdarkly/cpp-sdks/actions/workflows/client.yml)
 [![Documentation](https://img.shields.io/static/v1?label=GitHub+Pages&message=API+reference&color=00add8)](https://launchdarkly.github.io/cpp-sdks/libs/client-sdk/docs/html/)
 

release-please-config.json

@@ -4,7 +4,7 @@
   ],
   "packages": {
     "libs/client-sdk": {
-      "initial-version": "0.1.0",
+      "release-as": "3.0.0",
       "extra-files": [
         "include/launchdarkly/client_side/client.hpp",
         "tests/client_c_bindings_test.cpp",