[0.1.21] TensorNeko Release

Features:

• Now the program will warn when the signature of a dispatch function is overridden.
• View can get the components byView[name]
• Add @dispatch.of(*types) for manually registering types
• Add ref for Ref type wrapper for primitive types
• Variable and ProgressBar can bind to Ref.
• LineChart for web watcher visualization

Fix:

• @dispatch now can support class methods