Release v0.1.31

• Fix enum fields doesnt display when only have one field.
• Always do caching. will keep the last working symbols even syntax error.
• Improve performance.
• Added support for Interface and its methods.
• Added support for Alias Type declaration.
• Sort field name due the limit of node MAX_BUFFER.

Release v0.1.3

• Linter improvement
• Added document symbol provider