version 0.4
- improved expression parsing
- improved handling of wrong input for method editmatrix
- improved handling of extra columns in editrules
- added as.data.frame.editmatrix
- negative coefficients and constants were not parsed correctly
- added vignette
- removed deprecated editsinfo parameter from editmatrix
- added getOps and getCONSTANT functions for retrieving operators and constants from an editmatrix
- checkRows is now S3 generic and overloaded for character, data.frame and editmatrix
- added simplification of constraints (coefficients will be summed)
- renamed errormatrix into violatedEdits

version 0.2
- added CONSTANT parsing and generation
- simplified editmatrix by removing one parameter (accepting both types of input)
- renamed editsinfo to more understandable editrules
- removed documentation of internal "edits" function

version 0.1-1
- added an as.matrix function
- improved editmatrix example