feat: Add Vector convenience features - indexing, tuple comparison, floor
Implements issue #109 improvements to mcrfpy.Vector:
- Sequence protocol: v[0], v[1], v[-1], v[-2], len(v), tuple(v), x,y = v
- Tuple comparison: v == (5, 6), v != (1, 2) works bidirectionally
- .floor() method: returns new Vector with floored coordinates
- .int property: returns (int(floor(x)), int(floor(y))) tuple for dict keys
The sequence protocol enables unpacking and iteration, making Vector
interoperable with code expecting tuples. The tuple comparison fixes
compatibility issues where functions returning Vector broke code expecting
tuple comparison (e.g., in Crypt of Sokoban).
Closes #109
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Co-Authored-By: Claude <noreply@anthropic.com>
John McCardle
f041a0c8ca