Bump version for v3.1.3

Library version goes from 29.1.0 to 29.2.0 because:
* Source code has changed (bug fixes)
* Headers changed but only in ways that should not affect the API:
  * The CUDA fixes are invisible to non-CUDA compilers
  * The _has_attribute should only affect compilers where the build
    was previously completely failing.

Signed-off-by: Cary Phillips <[email protected]>

CMakeLists.txt

@@ -14,7 +14,7 @@ endif()
 
 # Imath version
 
-project(Imath VERSION 3.1.2 LANGUAGES C CXX)
+project(Imath VERSION 3.1.3 LANGUAGES C CXX)
 
 set(IMATH_VERSION_RELEASE_TYPE "" CACHE STRING "Extra version tag string for Imath build, such as -dev, -beta1, etc.")
 
@@ -39,7 +39,7 @@ set(IMATH_VERSION_API "${Imath_VERSION_MAJOR}_${Imath_VERSION_MINOR}")
 #   3. API changed:   CURRENT+1.0.0
 #
 set(IMATH_LIBTOOL_CURRENT 29)
-set(IMATH_LIBTOOL_REVISION 1)
+set(IMATH_LIBTOOL_REVISION 2)
 set(IMATH_LIBTOOL_AGE 0)
 set(IMATH_LIB_VERSION "${IMATH_LIBTOOL_CURRENT}.${IMATH_LIBTOOL_REVISION}.${IMATH_LIBTOOL_AGE}")
 set(IMATH_LIB_SOVERSION ${IMATH_LIBTOOL_CURRENT})