New phase I methods in escalation

Introducing new methods in `escalation` for TPI, mTPI and Neuenschwander et al.'s design for phase I trials, plus MCMC-based CRM methods.

trialr and escalation

The `trialr` package, the `escalation` package, how they work together, and how they will grow.

Fetching BibTeX citations using rcrossref

Fetching lots of BibTeX citations is simple using `rcrossref`

Dose-paths in the escalation package

Enumerate every possible dose selection decision for all dose-finding models implemented in the escalation package.

Introducing escalation

An R package to unify the interface of dose-escalation models in R. A modular approach that is scalable and extensible.