Revert "Merge HumanMade Custom Meta Box into lib/metabox (for real this time)"

This reverts commit 0d27d531ef63609055e7258410414c2fb19f7942.
Revert "Revert "Merge HumanMade Custom Meta Box into lib/metabox (for real this time)""

This reverts commit e201ad30393d410eab6bf822e5cdf3a95bded01c.
Revert "Merge HumanMade Custom Meta Box into lib/metabox (for real this time)"

This reverts commit 0d27d531ef63609055e7258410414c2fb19f7942.
Revert "Revert "Merge HumanMade Custom Meta Box as lib/metabox""

This reverts commit a31dc577757b360ac1d02c5faa2bf2cbbff12103.
Revert "Create standard .gitattributes file"

This reverts commit 6ff2a320a98d88273e1a387ee826cea84b85c476.
Revert "Revert "Create standard .gitattributes file""

This reverts commit 0be78d8edef65ea73c7ee1a9b0e0bd392eaabc2d.
Revert "Revert "Revert "Merge HumanMade Custom Meta Box as lib/metabox"""

This reverts commit b9f476c9d1270aada8109d781cde07c884690224.