Features:
- Alternatives (like {(41 | 42)}) implemented in the ursadb query syntax (#65)
- Better support for wildcards (#23)
- Syntax for indexing with taints (#31)
Performance:
- Query graph pruning (#67)
Correctness:
- Some improvements for thread safety (#32)
Refactoring and maintenance:
- Ursacli rewritten to C++ (#48)
- Documentation improvements (#33)
