0.12.0

What's Changed

• gp now uses cobyla by @relf in #110 , #113
• ego now uses cobyla and slsqp (nlopt is made optional) by @relf in #112
• egobox Python module: Better mixed-integer type declaration by @relf in #115
• Upgrade dependencies by @relf in #114
• Upgrade edition 2021 by @relf in #109
• CI maintainance by @relf in #111
• Bump actions/checkout from 2 to 4 by @dependabot in #107
• Bump actions/setup-python from 2 to 4 by @dependabot in #108

Full Changelog: 0.11.0...0.12.0