Completed translation of '17 limit and skip' into Spanish. Close #303.
Completed translation of '18 Revisiting first and last' into Spanish. Close #308.
Completed translation of '19 unwind' into Spanish. Close #310.
Minor edits for #303.
Minor edits for #303.
Merge pull request #307 from puentesarrin/issue-303

Completed translation of '17 limit and skip' into Spanish. Close #303.
Minor edits for #308.
Merge pull request #309 from puentesarrin/issue-308

Completed translation of '18 Revisiting first and last' into Spanish
Minor edits for #310.
Merge pull request #313 from puentesarrin/issue-310

Completed translation of '19 unwind' into Spanish. Close #310.