Changes in version 0.5.3 (2019-05-28)                  

  - Fixed encoding test which was failing on CRAN (debian-clang-devel).

                 Changes in version 0.5.2 (2018-02-07)                  

  - Fixed failing tests by integrating new features in testthat 2.0.

                 Changes in version 0.5.1 (2017-10-05)                  

  - Fixed issue where Ace editor was not working on Windows.

  - Added make_pathname().

  - Added swirl_courses_dir().

                 Changes in version 0.5.0 (2016-07-14)                  

  - Removed lp().

  - Deprecated testit(). testit() will be removed in swirlify 0.6.

  - Added demo_lesson() which replaces testit().

  - Added google_form_decode() to help course authors evaluate their
    students' progress in a swirl couse.

  - Added swirlify() which starts a Shiny app for authoring swirl
    lessons.

                  Changes in version 0.4 (2015-11-25)                   

  - Removed swirlify_help().

  - Changed demo_lesson() to testit(), although it will be changed back
    before swirlify 0.5. This was done because of compatibility issues
    with swirl.

  - Added lp() for quickly finding the file path to the current
    lesson.yaml.

                        Changes in version 0.3.3                        

  - test_lesson() and test_course() now check for proper lesson
    formatting.

  - Added tests for packing and unpacking a lesson.

                        Changes in version 0.3.2                        

  - Added add_license() for easy course licensing.

  - Changed count_units() to count_questions().

  - Changed test_lesson() to demo_lesson().

                        Changes in version 0.3.1                        

  - Removed shiny authoring tool. Development of this tool will continue
    as a separate project.

  - Added pack_course() and unpack_course() to help with sharing courses
    in the .swc file format.

  - Changed the API for all of the question writing functions which now
    start with the prefix wq_. This is meant to be used with
    tab-completion to make writing lessons easier.

  - Changed swirl2html() to lesson_to_html().

  - Changed hlp() to swirlify_help().

                      Changes in version 0.3.0.99                       

  - Fix typo in swirl2html() documentation.

                         Changes in version 0.3                         

  - Deprecate author_lesson(), which is the old R Markdown approach. We
    me eventually introduce a more efficient R Markdown style that is
    neatly integrated with the current YAML approach.

  - Change new_yaml() to new_lesson() with notice to user.

                        Changes in version 0.2.3                        

  - Normalize file paths using normalizePath() in case user specifies a
    relative path to a lesson, then changes their working directory.

  - Allow user to specify path to YAML lesson as an argument to
    set_lesson().

  - Update hlp() menu.

                        Changes in version 0.2.2                        

  - Add check to testit() to make sure that the lesson being tested is
    listed in the course MANIFEST, if one exists in the course
    directory.

  - Add commented out AUTO_DETECT_NEWVAR <- FALSE to customTests.R
    template created by new_yaml(). Setting this variable equal to FALSE
    can prevent double evaluation of printing and plotting commands.

  - Update hlp() output to include count_units() and testit(from, to).

                        Changes in version 0.2.1                        

  - Add swirl2html() to convert swirl lessons formatted in YAML to R
    markdown (Rmd) and html files. The output is a stylized webpage that
    acts as a standalone tutorial based on the original swirl lesson.

                         Changes in version 0.2                         

  - Add a more bare bones YAML authoring toolset initiated by
    new_yaml(). hlp() gives a list of related functions. We plan to
    integrate this new approach more closely with existing swirlify
    functions, but it functions well as is.