Changelog

Building against barry (>= 0.2.2.9000), currently available from GitHub (USCbiostats/barryr), fixes the td_formula() parser (USCbiostats/barry#26). The CRAN version of barry still has these bugs:
- Covariate names containing y<digit> (e.g., Day1) were read as motif terms, silently changing the model: "{y0} > {y0} x Day1" became Motif {a+}>{a+, b+} x Day1.
- "{...}x Covar" (no space before x) silently dropped the covariate.
- Transitions such as "{y0_1} > {y1}", with a current-time term on the left-hand side, were silently turned into intercept motifs; they now throw an error.
The same barry version also fixes wrong draws in sim_defm() caused by a support-vs-array index confusion (USCbiostats/barry#25).

Requires barry (>= 0.2.2), which fixes a hash-collision bug that made init_defm() appear to hang for models with many outcome columns (USCbiostats/barry#24). A 16-outcome model that previously never finished initializing now takes seconds.
Long-running computations (e.g., the support enumeration in init_defm()) can now be interrupted from R with Ctrl-C. Note that a model interrupted mid-initialization is left partially initialized and should be rebuilt with new_defm() before further use.

Returning to CRAN.
The defm now uses the same versioning as the barry library (first three numbers). The last number is the patch.

defm 0.2.2.9000 (development version)