learnr 0.10.0 (unreleased)

New features

Aggressively rerender prerendered tutorials in favor of a cohesive exercise environment (#169, #179, and rstudio/rmarkdown#1420)
Added a new function, safe, which evaluates code in a new, safe R environment. (#174)

Minor new features and improvements

Added the last evaluated exercise submission value, last_value, as an exercise checker function argument. (#228)
Added tabset support. (#219 #213)
Question width will expand to the container width. (#222)
Available tutorial names will be displayed when no name parameter or an incorrect name is provided to run_tutorial(). (#234)
The options parameter was added to question to allow custom questions to pass along custom information. See sortable::sortable_question for an example. (#243)
Missing package dependencies will ask to be installed at tutorial run time. (@isteves, #253)
When questions are tried again, the existing answer will remain, not forcing the user to restart from scratch. (#270)

Bug fixes

Fixed a spurious console warning when running exercises using Pandoc 2.0. (#154)
Added a fail-safe to try-catch bad student code that would crash the tutorial. (@adamblake, #229)

learnr 0.9.2

Fixed #136 by displaying full HTML messages (rather than just the text) if provided by the incorrect or the correct args to question(). (#146)
Improved documentation for deploying learnr tutorials in Shiny Server. (#142)
Fixed a highlight.js issue from rmarkdown 1.8. (#133)
Fixed an false positive in the diagnostics system. (#141)

learnr 0.9.1

Fixed a compatibility issue, so that existing tutorials don't break when using Pandoc 2.0. (#130)

learnr 0.9.0

@ commit #14413cc

learnr 0.8.0

@ commit #eeae534

learnr 0.7.0

@ commit #b71c637

learnr 0.6.0

@ commit #55c33cf

learnr 0.5.0

@ commit #a853163

learnr 0.4.0

@ commit #3339f8a

learnr 0.3.0

@ commit #9cd0082

learnr 0.2.0

@ commit #a81a694

learnr 0.1.0

init commit! #e2dbb20