Minor bug fixes

What's Changed

• Add namespace-aware parsing for rpc-reply by @GregDThomas in #51
• Preserve cause when rethrowing exceptions by @oven in #52
• Implemented get-data by @esend7881 in #54
• Only depend on the SLF4 API by @dkowis in #56

New Contributors

• @oven made their first contribution in #52
• @dkowis made their first contribution in #56

Full Changelog: v2.1.1.5...v2.1.1.6