Version 0.11 (Released 2020-04-20)

kernel_api() defaults to "text/csv" and UTF-8 encoding. Formerly, the function would decide on the content-type and encoding. More details are below in the 'Stability Features' subsection.
constant() no longer accepts simplify as an options. An integer vector is always returned. (#280)

It's now possible to specify the exact col_types (a readr::cols object) that is passed to readr::read_csv() inside redcap_read_oneshot(). (#258)
reader::type_convert() is used after all the batches are stacked on top of each other. This way, batches cannot have incompatible data types as they're combined. (#257; thanks @isaactpetersen #245) Consequently, the guess_max parameter in redcap_read() no longer serves a purpose, and has been soft-deprecated. (#267)
redcap_metadata_write() writes to the project's metadata. (#274, @felixetorres)
redcap_survey_link_export_oneshot() retrieves the URL to a specific record's suvey (e.g., "https://bbmc.ouhsc.edu/redcap/surveys/?s=8KuzSLMHf6") (#293)

httr::content() (which is inside kernel_api()) now processes the returned value as "text/csv", by default. This should prevent strange characters from tricking the process as the internal variable raw_text is being formed. See the [httr::content()](https://httr.r-lib.org/reference/content.html) documentation for a list of possible values for the content_type` parameter. (Thanks to great debugging by @vortexing #269, @sybandrew #272, & @begavett, #290)
Similarly, kernel_api() now has an encoding parameter, which defaults to "UTF-8". (#270)

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