v.1.2.5

• fixes: when factor levels are substrings, e.g., "m", "mm", "mmm" there was a bug in creating the linear functions for contrast computation. This problem is fixed.
• We moved more examples to use simulated data:
  • code to create linear and mixed models with one or two factors.
  • additional tests for linear function creation.
  • The prebuild package size (with vignettes and documentation) was reduced to 22.72 MB.
• Updated 2-factor vignette to include examples with modeling with subgroups, e.g., 'A_X', 'A_Y', 'B_X', 'B_Y' instead of using factors A, B, and X, Y and the interaction term.