Release 0.0.21

[0.0.21] - 2025-01-28 - ZenML 0.83.0 Compatibility

Loading spinner for DAG rendering to eliminate blank screen during data fetching
30-second TTL request caching for pipeline data provider to improve responsiveness
Wrapper instance caching in LSP server to reduce repeated getattr calls
Improved DAG view with node highlighting, step durations, and artifact type labels
New DagRenderer test suite with HTML escaping and XSS protection validation
New PipelineDataProvider test suite for data fetching, error handling, and singleton pattern testing
New ZenExtension test suite for service lifecycle and state management
New WebviewBase test suite for extension context management
New pipeline utilities test suite for URL generation and edge case handling
Enhanced MockLSClient with getPipelineRunDag, getPipelineRunStep, and getPipelineRunArtifact command support
Added getEventHandlers method to MockEventBus for better test infrastructure

Optimized model versions fetch from 10 to 5 items for 30% performance improvement
Improved ZenML wrappers with optimized getattr usage and reduced hasattr calls
Enhanced error logging consistency across all command modules
Updated ZenML wrapper implementations for 0.83.0 API compatibility
Consolidated activity bar provider interfaces for consistency
Removed ZenExtension prompt for interpreter (replaced with message in tree view)
Removed progress notifications for extension initialization and background operations
Errors now appear in tree view or console instead of popup notifications

Removed expensive object introspection from serialize_object for better performance
Fixed failing tests for pipeline caching and DAG renderer functionality
Fixed DAG visualization for ZenML 0.83.0: steps are now fetched separately due to API performance optimizations
Fixed XSS vulnerabilities in DAG error messages through proper HTML escaping
Fixed Content Security Policy violation by moving retry button logic from inline script to bundled JavaScript
Fixed AttributeError when ZenML client is not ready by showing appropriate tree view messages
Fixed circular dependency issues in LSP module that caused import errors
Fixed data provider pagination and error boundary handling across all activity bar views