Deprecate as.list.reactivevalues and add reactivevalues_to_list
reactivevalues_to_list: add all.names option
Rename reactivevalues_to_list to reactiveValuesToList
Merge pull request #79 from wch/better-deps

Finer grained dependencies when converting reactiveValues to list
Better CSS unit validation
Add runGitHub and runUrl functions
Add subdir argument for runGitHub and runUrl
Re-document