- add entry for complex number - fix a couple typos - refine definitions for "interpreted" and "coercion" based upon updates on   the python glossary wiki
- add entry for complex number
- fix a couple typos
- refine definitions for "interpreted" and "coercion" based upon updates on
  the python glossary wiki

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator