Update version to 3.7.4 in CMakeLists.txt (#87)

Updating version to 3.7.4 so we can cut a new release.

Needed for #86

CMakeLists.txt

@@ -14,7 +14,7 @@ endif()
 # PICT version, build, and product info
 set(PICT_VERSION_MAJOR 3 CACHE STRING "PICT major version")
 set(PICT_VERSION_MINOR 7 CACHE STRING "PICT minor version")
-set(PICT_VERSION_BUILD 3 CACHE STRING "PICT build version")
+set(PICT_VERSION_BUILD 4 CACHE STRING "PICT build version")
 set(PICT_VERSION_SHORT "${PICT_VERSION_MAJOR}.${PICT_VERSION_MINOR}")
 set(PICT_VERSION_FULL  "${PICT_VERSION_SHORT}.${PICT_VERSION_BUILD}")