new_contents: from numpy import mean, std
  from os import system
  from time import time
  
  cmake_times = []
  make_core_times = []
  make_mesh_times = []
  test_mesh_times = []
  
  num_cores = 3
  num_runs = 1
  
  for i in range(num_runs):
  
      # Reset build directory
      system('rm CMakeCache.txt')
      system('make clean')
  
      # Time configuration
      start = time()
      system('cmake ..')
      cmake_times.append(time() - start)
  
      # Time building libraries
      start = time()
      system('make -j%s chaste_core' % num_cores)
      make_core_times.append(time() - start)
  
      # Time building tests
      start = time()
      system('make -j%s mesh' % num_cores)
      make_mesh_times.append(time() - start)
  
      # Time running tests
      start = time()
      system('ctest -j%s -L Continuous_mesh' % num_cores)
      test_mesh_times.append(time() - start)
  
  
  with open('times.csv', 'w') as f:
      f.write(',mean,std')
      f.write('configure,%s,%s' % (mean(cmake_times), std(cmake_times)))
      f.write('build_libs,%s,%s' % (mean(make_core_times), std(make_core_times)))
      f.write('build_tests,%s,%s' % (mean(make_mesh_times), std(make_mesh_times)))
      f.write('run_tests,%s,%s' % (mean(test_mesh_times), std(test_mesh_times)))
  
subject: Add basic timing script