Update bj-lazy-load.php

Added the ability to lazy load the whole sidebar, as opposed to only the text widgets.
You can also select the option to lazy load only text widgets.

Modified the function 'filter' to check for lazy loading the twitter timeline.

Added the function '_filter_twitter_timeline' to filter the twitter timeline.
Yes, the regex is SUPPOSED to be safe .. but you never know about regex (esp since HTML is irregular)
Hmm .. maybe it would have been smart to allow both single quote and double quote .. as well as allow for more classes ... oh well.. next revision.

Changed the function '_get_options' to include the new 'filter_sidebar_widgets' (had to remove filter_text_widget) and 'lazy_load_twitter_timeline'

Added functions 'observe_sidebar' and 'stop_observing_sidebar_and_output_sidebar' to observe the sidebar html output.
The functions do not run on the admin side, only the template side.
The action hooks are not documented, but you can find them in widgets.php in the wordpress repository.