Add observeEvent and eventFilter functions for handling events
Code review feedback, part 1
Update to Bootstrap 2.3.2
Update NEWS
Added S3-dispatched input parsers.
Customize dispatch for NULL objects.

Don't provide class for input objects based on `type` field. Provide real NULLs to dispatched functions rather than empty lists.
closes #236: use sys.source(envir=) instead of source(local=)
closes #238: use keep.source() for sys.source()
Revert "Customize dispatch for NULL objects."

This reverts commit f4ada70e564e820c6abbab11c601d7498c5847f3.
Parse incoming NULLs as NA.
Move methods package to Depends
Merge pull request #289 from wch/methods

Move methods package to Depends
Add quiet option to runApp
Merge pull request #295 from wch/quiet

Add quiet option to runApp
Only allow access via localhost by default

This can be overridden via the "shiny.host" option or by explicitly
passing the host parameter to runApp/runExample.
Fix #21: singleton and tags$head are not really compatible with reactiveUI

This commit fixes two problems:

- tags$head content was not properly hoisted into the head
  of the document when UI was reactively rendered
- singletons were not respected in renderUI

This makes it possible for input/output components that rely
on JavaScript libraries to simply put their script/style
dependencies in their input/output methods. This is contrary
to previous versions of Shiny where that approach would work
unless the component only appeared in renderUI/uiOutput and
not as part of the initial page render.
Fix dateinput docs for pt-BR language
Update to jQuery 1.10.2
Update NEWS
Enumerate function variables, setup Roxygen to pass R CMD CHECK, added tests.