Release Notes - v0.1.5

`round-core` v0.1.5

Improved keyed list reconciliation for better performance and state preservation.

Keyed for loops: Use key=expr to enable efficient DOM reconciliation:
```
{for(todo in todos()) key=todo.id {
    <TodoItem todo={todo} />
}}
```
- Preserves input focus and cursor position during list reordering
- Minimizes DOM mutations by reusing existing nodes
ForKeyed component: New runtime component for keyed iteration with a "minimal-move" algorithm.

Major fixes to hover, diagnostics, and JSX superset parsing.

catch(e) hover now works correctly: Fixed a bug where hovering over catch showed "Fragment" instead of TypeScript info.
FOR loops now transform properly: Fixed a parsing bug where for(item in list) loops would show "Expression expected" errors.
Accurate offset mapping: Improved surgical gap preservation for try, catch, for, if, and switch transformations.
NaN guard in edits: Added protection against invalid edit ranges that caused offset drift.

extractCondition now returns start: Fixes offset calculations for all control-flow handlers.
Keyed FOR loop support: The LSP now correctly parses key=expr syntax and maps it to ForKeyed.