Remove windows files and update configure

Fix leak and update actions (#24)

* Fix leak and update actions

Fix leak in grib_get_message when requesting multiple messages.
codes_handle_delete was not properly called during the loop.

Updated GHA

Fixes #23

Fix for bad GRIB keys

Minor housekeeping to improves maintainability and string handling.

Bug fixes and doc updates

Packages now requires ecCodes >= 2.19.0 due to previous bugs
in grib_index.

Merge pull request #13 from nawendt/hotfix-fd

Fix file descriptor leak; minor cleanup

Version bump, email update

Merge pull request #5 from nawendt/develop

Move to ecCodes

Portablility fixes; Fixed examples/tests

Fixed grib_df bugs; code cleanup