try python 3.6 in CI

Author: jacobwilliams

.github/workflows/CI.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         gcc_v: [7,8,9] # Version of GFortran we want to use.
-        python-version: [3.7]
+        python-version: [3.6]
     env:
       FC: gfortran-${{ matrix.gcc_v }}
       GCC_V: ${{ matrix.gcc_v }}

src/tests/jf_test_30.F90

@@ -21,6 +21,7 @@ subroutine test_30(error_cnt)
     implicit none
 
     integer,intent(out) :: error_cnt
+
     type(json_file) :: json
     type(json_core) :: json_c
     integer :: i