Allow issue browse table to filter on field external ID

Fix PR delta value in main PR index potentially differing from delta shown when visiting PR for squashed PRs

Update release list to show what triggered each release

Link from release list to the critical defects resolved in release

Ensure that chart_title_link doesn't link to DORA stats with a committer, fixing test

Fix "Settings" icon from "Dora Stats" tab not activating settings

Ensure that Time Tracking field is recognized as fodder for issue browse dashboard

Show all branches that a commit is known to be associated with when viewing commit peek or commits#show

Update commit links from graphs so that they link to commit list parameterized to show any impacting commit in list, rather than only commits that are connected to default branch (or active branch) as is default

Fix feature velocity graph on DORA stats page (and others?) using impact stat summary boxes when the segment is related to PRs and should use PR-specific summaries

Add experimental settings to user details page

Enable tracker project issues for users with "Experimental Features" enabled (User -> Settings)

More detailed breakdown of reasons that a commit might lack Delta

Table rows show when a commit has its Delta credited to obsolete commits

Show date that a trial expires from the subscription page

Revise "PRs closed" state to only track PRs that were closed *without* being merged, making it effectively "PRs explicitly abandoned", much more useful than the sum of abandoned & merged PRs

Add case study to home page

Update messaging to show when a commit that receives value as part of a squashed PR is being shown (vs showing it with the traditional "obsolete" message). Confirm that a commit returns impacting? => true in spite of non-existent if its CommitValue is squash_value_retained?