tibble 3.2.1.9013

## Features

- `as_tibble()` calls `as.data.frame()` for objects that are not subclasses of `"tbl_df"` (@TimTaylor, tidyverse#1556, tidyverse#1557).

## Chore

- Check fast path first.

tibble 3.2.1.9012

## Chore

- Skip tests if packages are missing.

## Testing

- Skip tests if packages are missing.

tibble 3.2.1.9011

- Merge pull request tidyverse#1565 from tidyverse/snapshot-main-rcc-smoke-null.

tibble 3.2.1.9010

- Merge pull request tidyverse#1562 from tidyverse/snapshot-main-rcc-smoke-null.

- Merge pull request tidyverse#1561 from tidyverse/snapshot-main-rcc-full-config-os-macos-latest-r-release.

tibble 3.2.1.9009

- Merge pull request tidyverse#1560 from tidyverse/snapshot-main-R-CMD-check-base-null.

tibble 3.2.1.9008

## Documentation

- Fix rendering if suggested packages are missing.

tibble 3.2.1.9007

## Testing

- Override :: to avoid failures in tests without suggested packages.

tibble 3.2.1.9006

- Merge branch 'docs'.

tibble 3.2.1.9005

## Chore

- Snapshot updates for rcc-smoke (null) (tidyverse#1548).

tibble 3.2.1.9004

## Documentation

- Alt text (@maelle, tidyverse#1528, tidyverse#1539).