v0.3.0

• Created diffing-tool for Eco files
• Added grammars for SQL and RegEx
• Improved cross-language namebinding and code-completion
• Automatic language boxes
• Optimised node reuse via top-down reuse
• Enabled language boxes within comments and strings
• Improved cursor movement around language boxes
• Full working version of Wagner's error recovery
• Improved syntax-highlighting
• Speed up grammar loading via caching
• Optimised memory usage of incremental AST
• Java grammar fixes
• Bug fixes and improvements