Support for the 'Mathpix' API (Image to 'LaTeX')

Given an image of a formula (typeset or handwritten) this package provides calls to the 'Mathpix' service to produce the 'LaTeX' code which should generate that image, and pastes it into a (e.g. an 'rmarkdown') document. See < https://docs.mathpix.com/> for full details. 'Mathpix' is an external service and use of the API is subject to their terms and conditions.

News

mathpix 0.3.0

Maintenance release
More images work thanks to backend improvements from Mathpix service. (updated tests accordingly).
Included covrpage test summary (see https://github.com/jonocarroll/mathpix/tree/master/tests)
Adjusted dependence to patchlevel 0

mathpix 0.2.0

Ability to not insert the LaTeX block (insert = FALSE).
Errors encountered in processing now show to the user rather than returning an empty block (#4).
Ability to retry equation detection with a pre-processed image (retry=TRUE) (#3, #5).
- explicit magick support now required.
- tested with tools/eq_no_05_screencapfixes.jpg and retrying works.
Providing a non-existent file produces an error rather than a warning.
README is now self-contained (images in tools/).
README now directs users to https://dashboard.mathpix.com for key requests (#2).
Added Appveyor support.
Added covr support.