Fixes failing CRAN checks.

Updates README, NEWS, and CITATION

Fixes failing Apple M1 tests on R-devel.

Final revisions for first CRAN release.

Fixes broken link in README

Adds additional links to the manual to the README

Minor bug fixes

- Always set echo = FALSE for appendix chunk
- Apply format.args in apa_table() when merge_method = "table_spanner"

Urgent bug fix

First CRAN prerelease

New release to master branch.