v0.20.0

• (MINOR) SVG support (#226)
• (MINOR) Update several X509-related crate dependencies (#225)
• Update thiserror to 1.0.40 in /sdk (#223)
• Avoid chrono's transitive dependency on time crate (#222)
• Require openssl >0.10.48 to address multiple RUSTSEC warnings (#221)
• Apply code format to doc comments (#220)