v0.2.13

CovarianceEstimation v0.2.13

Diff since v0.2.12

Merged pull requests:

• Update the README for WoodburyEstimator (#96) (@timholy)
• Bump codecov/codecov-action from 3 to 4 (#97) (@dependabot[bot])
• Bump julia-actions/setup-julia from 1 to 2 (#98) (@dependabot[bot])
• Bump codecov/codecov-action from 4 to 5 (#99) (@dependabot[bot])
• Extend nonlinear shrinkage with lower bound on eigenvalue (#101) (@mateuszbaran)