Added dependency to the fontawesome package, to allow inclusion of an icon in a toast. Icons must be included with the fa_i function; that does not work with the fa function.
Allow to pass a shiny.tag object to the text argument of the showToast function. This allows for example to use text = tags$span(style = "color:lime;", "Message") instead of HTML('<span style="color:lime;">Message</span>').
The showToast function has a new argument id. See the details in ?showToast for its usage. It can be used for an alternative of the R callback.
New function toastUpdate, to update a toast.
First release.