Bump libakgl to 0.2.0

Require libakstdlib 0.2 when consuming an installed dependency, matching the API adopted by the preceding commit.

Co-Authored-By: Codex GPT-5 <noreply@openai.com>

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.10)
 # The single source of truth for the library version. It drives the generated
 # include/akgl/version.h, the shared library's VERSION and SOVERSION, and the
 # Version field in akgl.pc. Bump it here and nowhere else.
-project(akgl VERSION 0.1.0 LANGUAGES C)
+project(akgl VERSION 0.2.0 LANGUAGES C)
 
 include(CTest)
 option(AKGL_COVERAGE "Instrument libakgl and generate coverage reports with CTest" OFF)
@@ -70,12 +70,12 @@ else()
   if(NOT TARGET akerror::akerror)
     find_package(akerror REQUIRED)
   endif()
-  # 0.1 rather than bare: libakstdlib 0.1.0 ships an akstdlibConfigVersion.cmake
+  # 0.2 rather than bare: libakstdlib 0.2.0 ships an akstdlibConfigVersion.cmake
   # with SameMinorVersion compatibility, mirroring its soname, so this accepts
-  # any 0.1.x and refuses 0.2 and 1.0. Unversioned, this path would silently
+  # any 0.2.x and refuses 0.3 and 1.0. Unversioned, this path would silently
   # accept an ABI-incompatible libakstdlib.
   if(NOT TARGET akstdlib::akstdlib)
-    find_package(akstdlib 0.1 REQUIRED)
+    find_package(akstdlib 0.2 REQUIRED)
   endif()
   if(NOT TARGET jansson::jansson)
     find_package(jansson)