Valentina 1.0.2

Maintenance release. No new features — targeted crash fixes addressing
issues reported by the community since 1.0.1.

Highlights:
- Fixed multiple crashes during undo/redo of piece and tool operations
- Fixed crash during pattern parsing when a node object has an unexpected type (release builds)
- Fixed crash when loading old-format pattern files missing a version attribute
- Fixed crash on Windows when undoing/redoing tool addition with property browser open
- Fixed crash in Tape app during shutdown in SyncKnownMeasurements
- Fixed draw scene labels showing wrong color when custom theme opposes system theme

Fully compatible with 1.0.0 and 1.0.1 pattern files. No migration required.