v0.3.0

New Feature

• Add pages and custom grouping. This is not especially useful on the server, since there is likely only a single relevant page for each HAR log. But some tools like HAR Viewer do not behave correctly without this field.
• The Fetch instance returned by withHar, or individual fetch calls, can specify a custom page reference using the harPageRef option.

Enhancement

• Specify -1 for timings that are not collected, instead of excluding them altogether. Even though the fields are optional, some tools like HAR Viewer do not behave correctly without them.