FPM release v0.12.0 (#1142)

Author: perazz

fpm.toml

@@ -1,5 +1,5 @@
 name = "fpm"
-version = "0.11.0"
+version = "0.12.0"
 license = "MIT"
 author = "fpm maintainers"
 maintainer = "@fortran-lang/fpm"

src/fpm/fpm_release.F90

@@ -18,7 +18,7 @@ type(version_t) function fpm_version()
 
 ! Fallback to last known version in case of undefined macro
 #ifndef FPM_RELEASE_VERSION
-#  define FPM_RELEASE_VERSION 0.11.0
+#  define FPM_RELEASE_VERSION 0.12.0
 #endif
 
 ! Accept solution from https://stackoverflow.com/questions/31649691/stringify-macro-with-gnu-gfortran