Convert Excel files with one Go function. converter.Convert(source, saveOption, sink) turns xlsx into PDF, CSV, HTML, Markdown and 32 total formats — from a concise file-to-file one-liner to fully flexible memory, stream and batch environments....xlsx report.pdf # to PDF $ go run . input.xlsx report.csv #...to CSV $ go run . input.xlsx report.html # to HTML $ go run . input...