- Map: Create `PROTOCOL_VERSION` set to 27 (current maximum in MineTest)
- Map: Modify the default version of `MapBlock.version`
- Map: Add `MapBlock.lighting_complete` set to 0 (introduced in version 27)
- Map: Define `MapBlock.{set,get}_lighting_complete` which take/return tables representing a MapBlock's 'Lighting Complete' flags
- Map: Update implode and explode methods to take in account modifications introduced in version 27
- Map: Change 'equal to' to 'greater than or equal' when checking for version 25 time data length compatibility
- Nodes: Add `param0` as a field of `Node`
- Nodes: Add getters and setters for `Node`
- Tests: Add a section to check 'Lighting Complete' flags setting/getting
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