v2.5.0

LinearOperators v2.5.0

Diff since v2.4.1

Closed issues:

• Add a buildkite workflow (#252)

Merged pull requests:

• add diagonal PSB quasi-Newton update (#253) (@dpo)
• fix for Kronecker product scaling (#254) (@fguevaravas)
• Drop Julia 1.3 (#259) (@amontoison)
• Bump Documenter version (#260) (@amontoison)
• Update .gitignore (#261) (@amontoison)
• Setup buildkite (#262) (@amontoison)
• Release 2.5.0 (#265) (@geoffroyleconte)