Inherit 'attach_to' attribute from 'validate' action to all validators.  All validators supply 'custom' server-side validators which is checked when the validation group is submitted, and the custom validations send new LiveValidation parameters to the browser.  The 'attach_to' attribute must be preserved.
Convert #upload{} use uploaded_file from simp brig
error_handler is not a builtin Erlang or Nitro mod
Add stack trace to continue error. Fix indenting
Fix commas being removed from button values
Add #option_group element and #option shortcut
Allow iolist as src for #image
Remove cellspacing=0 and cellpadding=0 from table
Version bump to 2.2.0-pre
Fix inplace_textarea_validators
Add initial implementation of wf:eager/defer

Conflicts:

	include/wf.hrl
	src/actions/action_wire.erl
	src/lib/wf_render_actions.erl
	src/lib/wf_render_elements.erl
Add body and image attribute to #button, add docs
WF_IF isolated into fun to prevent var leakage
Remove the auto resizing on the upload element

Conflicts:

	src/elements/forms/element_upload.erl
Merge pull request #45 from tex/hide_tabs_by_move

hide tabs by moving them off the screen
Add gproc registry handler from n2o (Thanks @5HT)
Wiring priorities working in Comet
Merge branch 'defer-aq'
Add data_fields to range, restful_upload, and span

Conflicts:

	include/wf.hrl
Add crash handler for gracefully handling errors