chore: bump version to v0.3.1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: AmanSwar

CMakeLists.txt

@@ -5,7 +5,7 @@ if(POLICY CMP0177)
 endif()
 set(CMAKE_POLICY_VERSION_MINIMUM 3.5 CACHE STRING "" FORCE)
 
-project(rcli VERSION 0.3.0 LANGUAGES C CXX)
+project(rcli VERSION 0.3.1 LANGUAGES C CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)