Update to 1.4.2

Changelog:
1.4.2:
Bug fixes

    Bug 1299736 - just "zanata" execution gives traceback

1.4.1:
Improvements

    zanata init Initialize Zanata project configuration
    zanata stats Displays translation statistics for a Zanata project version

Bug fixes

    Bug 1206995 - Should allow anonymous pull from Zanata
    Bug ZNTA-853 - Crash when pushing local translations

1.4.0:
Improvements

    Added
        <src-dir> and <trans-dir> in zanata.xml
        rest/config to centralize service-to-resource mappings.
        ProjectContext to load local: user & project and remote configs, once.
    Organize exception messages.
    Improved logs and zanata <command> --help
    HTTP to HTTPS redirect - auto, if found in httplib2 response

Bug fixes

    Bug 1215274 - Should be able to specify minimum percentage completion on pull
    Bug 1156236 - As a project maintainer, I want to be able to use the latest list of languages defined in the server for a project when using the client.

1.3.22:

This release contains

    Improved error codes, that means in case of error messages z-p-c returns appropriate error codes to system, this is useful for people who uses z-p-c from command line
    Bug fixes
    Improved ReadMe

(ryoon)