v0.4.0

• No longer scan the raft log when becoming a leader. (#100)
• Added the ability to skip broadcast commit at runtime. (#115)
• Documented all public API. (#87)
• Refined a few points in the API in preparation for more work. (#102)
• Configuration logic was moved into its own module. (#91)
• Added fail-rs based tests. (#114)
• Added benchmarking using criterion. (#110)
• Expanded tested examples. (#118)
• Improved documentation. (#106)
• Refined the CI scripts to ensure strict linting. (#117)
• Tests now output logs. Configure it with RUST_LOG=raft=info. (#103)
• Eased the log dependency. (#116)
• Formatting updates. (#104)
• Updated some dependencies. (#97)
• Use the clippy preview from Rustup. (#95)
• Adopted a Code of Conduct. (#107)