Examples added in dt_code, gauss_code method. Attempt at lazy import.
Small changes. WIP : Check on input for oriented gauss code.
Lazy imports implemented. WIP : Other checks.
input variable x is replaced by input_. WIP : Checks on input.
Typo
Check on the input.
A stricter version.
Condition added for input check. WIP : one more to be added.
Merge pull request #23 from amitjamadagni/week14

Examples added in dt_code, gauss_code method. Attempt at lazy import.