v0.16.6

Latexify v0.16.6

Diff since v0.16.5

Merged pull requests:

• render cbrt and fourthroot functions (#305) (@mxhbl)
• Latexify undefined array elements (#308) (@gustaphe)
• Fix doubly-indexed arrays (#316) (@gustaphe)
• Fix dataframe 'head' argument (#324) (@gustaphe)
• Replace boolean cdot keyword argument in favor of more flexible mult_symbol string (#325) (@hersle)
• Parse all four levels of \dot (#326) (@hersle)

Closed issues:

• Missing infix operators for mathematics (#246)
• How can I construct a recipe for Measurements.jl ? (#306)
• Latex output for macros ignores recipes (#314)
• \text choice in recipes (#317)
• :head not working any more? (#322)