Sanitize the data passed to PUT

• Sanitize the data passed to PUT /checks/{check_id} by stripping the
  'verify_certificate' parameter for non-http checks.

maintenance window support

• added changelog
• switched legacy, unsupported maintenance window getter to supported rest
  api method

maintenance release

Added summary api

Bugfixes release

Bugs:

• Add "maintenanceids" to ignored fields
• Use native method requests.json(): solves decode response in ApiError Exception in python3

Improvements:

• Simplify create_check() by removing redundant argument

Bugfix release

Mostly stylistic and packaging related changes. Updated pypi upload.

Maintenance window improvement

Fix filters on get_checks().
Fix maintenance window management

0.1.1

Fixed tags filter when creating maintenance windows

0.1.0

• Fetch method to get check details
• Setup tests