Release Notes for opkg-0.5.0
====

### Added
- Added support for zstandard data compression (disabled by default).

### Changed
- Opkg will no longer attempt to remove the cache directory, if it already doesn't exist. This avoids a spurious error in that case.
- Increased minimum libsolv version from `0.6.25` to `0.7.14`, which adds support for blacklisting packages during the solve.
- Use libsolv's package blacklisting feature when `--add-exclude` is requested by the user, so that libsolv can provide a more meaningful error message in the case of solve failures.
- `opkg` will now return a non-zero error code and an error message when `opkg search` returns no results - which is more consistent with dpkg behavior.
- `opkg_archive` will now propagate error messages and error codes from libarchive, when archiving operations fail.
- `opkg` operations now use volatile cache directories which are namespaced by their process ID, enabling multiple read-only operations to exist concurrently.

### Removed
- Removed pathfinder x509 certificate checking, because the feature doesn't seem to be used by the community and the library is obsolescent.
- Removed openssl signature verification, because the feature doesn't seem to be used by the community and GPG feed signing should be preferred.

### Fixed
- Fixed a couple of GCC 8 compiler warnings regarding dangerous string operations in libopkg.
- Fixed a GCC 8 compiler warning about unused variables in `opkg_download_curl.c`.
- Fixed a GCC 8 compiler warning about parameter visibility in `opkg_solver_libsolv.c`.