Small fix of bad error messages

1.2.0 did not tell user where a error was found then they for example wrote the same number twice in a row/column/square but that has been fixed

SodukuSolver version 1.2.0

• SodukuSolver can now solve slightly more difficult sodukus, one of them is the default "vhard_1"!
• The program can now tell you if it thinks there are no solutions (or multiple) to a soduku, but discovering multiple solutions is currently very limited. (more exactly: only sodukus with less then 17 clues are currently flagged as having multiple solutions, will try to improve it)

Update: SodukuSolver 1.1.0

• Made the solving algorithm slightly smarter, no big change here in this release.
• Fixed bugs from 1.0.0. One of them being that Start/Restart does not correctly clear the board inside the program, only visually.
• The biggest changes are on the inside

The first release!

I decided to try the release feature. This version of Soduku Solver can solve easier sodukus but not all, maybe it can solve all solvable one day in the future!