Release 8.4.2

[davecramer]

Update changelog to reflect the #56
make sure the sql files are correct for create extension
tag 8.4.2
inform users

[AndreMikulec]

@davecramer,

make sure the sql files are correct for create extension

@ikasou committed using the HEAD. He did not have to change the versioned sql files (8.4.2 was already there).

I know 8.4.2 works. I had just copied my output to the userguide.md
https://github.com/postgres-plr/plr/blame/master/userguide.md#L1681

SELECT * FROM pg_available_extensions WHERE name = 'plr';
 name | default_version | installed_version |                            comment
------+-----------------+-------------------+----------------------------------------------------------------
 plr  | 8.4.2           | 8.4.2             | load R interpreter and execute R script from within a database
(1 row)

About tag 8.4.2
Is Add support for pg custom type (tuple) arguments in window PL/R functions a feature?

Did you mean update to 8.4.3 or does everything just stay in 8.4.2?

[davecramer]

I would say pg custom type args is a feature.

We have not tagged 8.4.2 yet so it stays here

[df7cb]

... would you consider tagging 8.4.6 with the PG16 (#138) fixes?

[davecramer]

I guess we will have to do something.