v0.16.1

ProximalOperators v0.16.1

Diff since v0.16.0

Merged pull requests:

• Add Aqua to tests, fix issues (#144) (@lostella)
• Fix broken badge in README.md (#145) (@lostella)
• Update Documenter version (#146) (@lostella)
• Fix undefined identifier in IndZero (#147) (@lostella)
• Update Project.toml to include stdlib versions (#148) (@lostella)