Added ability to query slaves for executors.

  - can pull list of executor objects for
    each slave
  - added unit tests for new code.
Added ability to query slaves for executors.

  - can pull list of executor objects for
    each slave
  - added unit tests for new code.
Merge branch 'master' of github.com:makewhatis/jenkinsapi
merge from master
logging fix for invalid response
fixing pylint failure
Merge pull request #239 from rocktavious/login_fix

logging fix for invalid response
Version bump
Remove inactive developers from the main PROJECT_AUTHORS.
Move @lechat up the list since he's the most active maintainer
Merge pull request #241 from makewhatis/master

Adding a method to expose /computer/api/python
Merge branch 'master' of https://github.com/salimfadhley/jenkinsapi
Addressing issue/221 - changing depth=1

  - only thing that depth=2 adds is the
    "fingerprint":[] item, which turns a
    600KB request to a 180M request on a
    large repo.