Mimic 1.8.0

What's Changed

• Standardise :module_already_copied error tuple by @cassiomarques in #48
• Fix stub with undefined by @edgurgel in #56
• Update README with @jimsynz's correct github handle by @joshprice in #57
• Fix typo in documentation examples by @sevenseacat in #59
• Upgrade to latest ExDoc by @davydog187 in #62
• Add information about intra-module functions to README by @regan-karlewicz in #68
• Update gh actions by @edgurgel in #69
• Copy structs when they exist by @harrisi in #67
• Bump elixir requirement to ~> 1.16

New Contributors

• @cassiomarques made their first contribution in #48
• @joshprice made their first contribution in #57
• @sevenseacat made their first contribution in #59
• @davydog187 made their first contribution in #62
• @regan-karlewicz made their first contribution in #68
• @harrisi made their first contribution in #67

Full Changelog: v1.7.4...v1.8.0