- PostgreSQL 10 is EOL.

- refresh patch-Makefile-ldflags.patch

- enable pg 13 and 14

- update to 8.4.5
- added sql upgrade path to fix
- changes from 8.4.4
- changed files names to be consistent with extension version
- changes from 8.4.3
- reverted part of PR#88. postgres has reverted the changes to
hex_decode that made it necessary (#120)
- changes from 8.4.2
- Changed R version to 4.10.
- Added support for transactions in procedures. @petere
- Added support for pg custom type (tuple) arguments in window
functions