1.2.0

What's Changed

• Add all element cols by @cstrauch711 in #25

Capability to specify any set of elemental columns. Change is somewhat backwards compatible with previous versions, where CHNOSP were the only elemental columns specified. get/set functions for those elements should still work, but object construction is changed. See the documentation for the new as.peakData

Full Changelog: 1.1.0...1.2.0