cmake configure test only when BUILD_TESTING=ON (#55)

Allow reading of states and increments for structured columns (#52)

Merge pull request #49 from MetOffice/feature/fix_bug_memory_manag

fixed bugs (memory leakage) in I/O processing procedure

Merge pull request #47 from MetOffice/feature/verbose_time_error

Add space

YAML format error output.

Space times out vertically.

Print out available times

Merge pull request #45 from MetOffice/feature/no_fortran

Removal of unused reference to Fortran.

Merge pull request #35 from MetOffice/feature/ci_update

Merge branch 'develop' into feature/ci_update

tidy

Move coding norms setup to a separate block