v0.1.0

We provide new experimental functions, these might be subjected to non trivial
breaking changes in the features and they have some known issues but we decided
to release them in the wild already:

• flow_view_vars() shows dependencies between variables within a function
• flow_view_deps() shows dependencies between functions in a given package
• flow_view_shiny() is a wrapper around flow_view_deps() to show only server
  and ui functions and functions that call them

These are introduced in vignette("experimental-functions")

Additionally :

• Various bug fixes, in particular vignettes and compatibility with older R versions