R 4.0 compatible

umx 3.0.5

• December 2019 R 4.0.0 compatibility
• BUGFIXED: umx_is_ordered was broken by previous fix to support the un-tidyverse mucking with dataframes... Now fixed
• BETA: umxRAM supports multi-group via `group = "column"
• IMPROVED: umx_score_scale now works with binary (0-1) items
• IMPROVED: umx_time gains "lap" (report elapsed time without restarting timer)
• IMPROVED: umx_time behavior with no input - now prints the current time and date
• IMPROVED: umxFactorScores can now return SEs
• IMPROVED: umxFactorScores allows abbreviated type names
• IMPROVED: umx_reorder can operate without verifying data (ignore precision digits in triangles of cov matrices)
• IMPROVED: residuals can re-order variables for ease of checking patterns of residuals
• IMPROVED: umxPath(defn= Definition vars now auto-named if labels not given closes #107
• IMPROVED: umxACEv uses default name "ADEv" (instead of "ACEv") if user sets dzCr = .25
• IMPROVED: umxAPA only uses italic Beta when std = TRUE
• IMPROVED: umxRAM now respects umx_set_silent
• CLEANUP: More removal of unused and obscure functions:
• CLEANUP: umxRAM2Ordinal to xmuRAM2Ordinal
• CLEANUP: umx_fix_latents and umx_fix_first_loadings to encourage user to be more explicit in their modeling.
• CLEANUP: Reorganized function groupings to be easier to navigate.