v3.0.7

• Deprecate Matrix::reachable() for Matrix::bfs_reachable() and
  Matrix::dfs_reachable()
• Add dfs_reach()
• Use an enumeration to represent MatrixFormatError

v3.0.6

• Add MSRV and check for consistency
• Add #[must_use] on Weights trait
• Use thiserror crate to build MatrixFormatError
• Add an example for Grid as Debug

v3.0.5

• Alternate Grid debug mode

v3.0.4

• Add Grid::reachable()
• Add Matrix::get() and Matrix::get_mut()

v3.0.3

• Add Matrix::reachable()
• Better Matrix corner cases documentation

v3.0.2

• Remove references in Grid methods
• Remove more references in Matrix methods

v3.0.1

• Remove unused Matrix::uninit/Matrix::assume_init()
• Remove remaining debug_assert!() calls

v3.0.0

• Use tuples instead of tuples reference for Matrix index