yadg pre-release 4.2a2

What's Changed

• Documentation update. by @PeterKraus in #72
• chromdata: Implement parsers for Empa's online LC. by @PeterKraus in #73
• electrochem: Add transpose parameter by @PeterKraus in #74
• electrochem: Eliminate the use of ULP. by @PeterKraus in #75

Full Changelog: 4.2a1...4.2a2