Use fiveam for testing.

Also add one export and a test for it.
Add all exports to package definition.
Rename tests directory, migrate old tests.
Fix MATRIX44-DETERMINANT*.
Improve and export the PRINT-MATRIX* functions.

Add an output designator and compile-time variable output format.
Export the floating point format.
Fix symbol resolution to the CL-TUPLES package.
Don't depend on *read-default-float-format*.
Merge branch 'Ferada-fiveam-testing'

Merge:  Use fiveam for testing. #5
Merge branch 'fix-determinants' of https://github.com/Ferada/cl-tuples into Ferada-fix-determinants

Merging  Fix 4x4 determinant. #6
Merge branch 'Ferada-fix-determinants'

Merging  Fix 4x4 determinant. #6
Merging  Don't depend on *read-default-float-format*. #7
Merge branch 'fare-master'

Merging:  Don't depend on *read-default-float-format*. #7