v0.2.1

Fixed a bug where the StrategicBacktrackingSolver with a OnlyCellStrategy could yield wrong solutions.

v0.2.0

Added strategies with solvers which deploy them.
Added functionality to constraint to enable a notion of "groups" of cells.
Minor style, test, and benchmark improvements.

v0.1.1

A few fixes:

• Added repository link to Cargo.toml
• Fixed Fisher-Yates shuffle

v0.1.0

First release with the following features:

• Parsing and printing Sudoku
• Checking validity of Sudoku and solutions according to standard rules as well as some common variants
• Injection of custom constraints
• Solving Sudoku using a perfect backtracking algorithm
• Generating Sudoku, with a possibility to specify a custom solver that has to be able to solve the result, thus controlling the difficulty