0.33.0

• There is a new convenience method Sections.get_or_create() that allows you to manipulate a section
  without checking if it exists first. If a section doesn't exist, it will be appended to the end. (#441)
  For example, this will work properly even on spec files without %changelog:

  with spec.sections() as sections:
      changelog = sections.get_or_create("changelog")
      changelog[:] = ["%autochangelog"]