0.6.3

Features:

• Disable PC adjustment in the backend for libunwindstack (#839)
• Crashpad backend allows inspection and enrichment of the crash event in the on_crash/before_send hooks (#843)
• Add http-proxy support to the crashpad_handler (#847, crashpad#86)

Internal:

• Updated Breakpad backend to 2023-05-03. (#836, breakpad#35)
• Updated Crashpad backend to 2023-05-03. (#837, crashpad#82)