Merge branch 'api-improvements' of https://github.com/Financial-Times/ft-frontend-build

# By Arjun Gadhia
# Via Arjun Gadhia
* 'api-improvements' of https://github.com/Financial-Times/ft-frontend-build:
  fix typo in css file generation
Version bump
Merge branch 'master' of https://github.com/Financial-Times/ft-frontend-build

# Via adgad
* 'master' of https://github.com/Financial-Times/ft-frontend-build: