chore: update copyright year to 2023-25 in relevant files

Merge pull request #12 from arminms:issue_#11

Fix problem with 4th argument of make_data_block() function (#11)

Merge pull request #10 from arminms:animate_#9

Add support for other gnuplot's terminal types (#9)

Fix issue #7

Tagging v1.0.1

fix license badge link