Tag v0.3.2

Tag v0.3.1

Tag v0.3.0

Tag v0.2.0

Add .deb packaging workflow with GitHub Releases

Build .deb packages for PG 13-18 on Ubuntu 22.04 (amd64 + arm64)
and upload them to GitHub Releases for public unauthenticated downloads.

- main pushes → rolling `dev` pre-release
- customer-* pushes → rolling `customer-<name>` pre-release
- v* tags → attached to the version release

Also adds CURL_WRITEFUNC_ERROR compat shim in http_streaming.c
for Ubuntu 22.04's older libcurl (7.81).

Move version to version.h & add `pgch_version`

Simplify the setting of the semantic version by renaming `src/fdw.c.in`
to `src/fdw.c` and adding `src/include/version.h.in`, which contains
only the version constant. Update the `Makefile` to generate
`src/include/version.h` from it and remove all the targets that
previously generated `src/fdw.c`. In particular this simplifies the
setting of `OBJS`, which now longer needs to sort out duplicate `*.c`
files.

Add the new SQL function `pgch_version()`, which simply returns the
version constant. It is not named `pgch_version()` because Postgres
reserves `pg_` prefixes for itself. Adding this function requires `ALTER
EXTENSION UPDATE`, so increment the extension version to `0.2`, add an
upgrade script, and increment the library and release semantic version
to `0.2.0`.

Tag v0.1.10

Tag v0.1.6

Tag v0.1.5

Tag v0.1.4