timeline 4.7.x-1.0

Changes since David Donohue's initial development release:

• Added an option for specifying which event/date the timeline views should initially be centered on after loading.
• Fixed widget creation so that the 'Loading...' bubble is displayed.
• #94031: Allow using custom CCK fields as the start/end date, title and description of timeline events (kudos to John Stalcup).
• #79472: Fix asynchronous timeline loading problems occuring in IE6 (kudos to John Stalcup and Erwin Lion).
• #91081: Corrected the timeline popup node links (kudos to Eric Charikane).
• #90660: Prevented other modules (e.g. devel.module) from intefering with timeline JSON or XML feed output (kudos to Steve Yelvington).
• #90272: Extended the module's installation and usage instructions, and reorganized the code for better extensibility.
• #90272: Implemented an installation hook which verifies that the required Views module is installed and enabled, and outputs a warning in case it is not.
• #90272: Implemented JSON output and added a setting for specifying whether to use JSON or XML for loading the timeline data feed.
• #90272: Simplified the XML output code by making use Drupal's built-in function format_xml_elements().
• #90272: Changed dates/times in data feed to use the ISO-8601 format, and added explicit date format specifier to data feeds.
• #90272: Added a setting for specifying the base URL to load the timeline JavaScript widget from.
• #90272: Added a setting and cache control implementation for specifying the client-side cache lifetime for timeline data feeds.
• #90272: Changed timeline data feed loading to use a relative, instead of absolute, URL to counteract problems when accessing a site via HTTP/HTTPS both.
• #90272: Added an explicit UTF-8 character set specifier to the HTTP Content-Type header of the data feeds.
• #90272: Implemented some initial Simpletest unit tests for verifying the well-formedness of the data feeds provided by the timeline module.
• #90272: Implemented a best-effort workaround for the widget's timezone display bugs, claiming dates are GMT while they're in fact explicitly adjusted to the current user's timezone.
• #90272: Added a wrapper DIV element around timeline DIV for easier control over theming, and added a visible border around the timeline widget for stylistic effect.
• #90272: Changed the default timeline CSS class name and width, and set the timeline XHTML element ID to the name of the current timeline view in order to facilitate custom theming.
• #90272: Separated timeline creation JavaScript code out of the module and into a file called timeline.js; also added an initial timeline.css stylesheet file.
• #90272: Successfully tested vertical timeline views (with newest version of the timeline widget).