fixed decoding only utf-8 encoded messages
updated search to support various operators and ordering

- Supported operators: =, !=, >, <, LIKE, NOT LIKE (thanks to Mikael for
  inspiration). Closes #2371.
- Shortening of functions last_updated and new_correspondence
bumped to version 1.0.5
Adds support for Basic HTTP auth
add support for HTTP digest authentication and better exceptions
specification

- add support also for HTTP Digest authentication
- specification of different exceptions
- global dictionary with regexp patterns
change project website to GitLab
update README
bump version to 1.0.6
add changes at version 1.0.6
add README.rst to manifest
bump version to 1.0.post6
add APISyntaxError exception
fix spliting of field Requestors to list and handling lists in edit_ticket
add unit tests for ticket operations

- integrations with Travis CI
- remove standart modules from dependencies in README
fix typo in script name
fixed compatibility issues with Python versions 2.6 and 3.2