Resolve an issues list against the current concordance — resolve

Takes the cases of an earlier issues list and says what happened to each:

fixed: the case no longer fails, and the change log has changes to its variable, xpath or table since the list was made;
fixed_check: the case no longer fails because the check was corrected (no change to the concordance);
accepted, needs_input, deferred: the latest validation-log entry for the case;
review_only: a context check whose catalog fix is "review only";
open: still fails with no decision.

Usage

resolve_issues(
  before,
  now,
  changes,
  log = read_validation_log(),
  fixes = character(),
  xpath_var = NULL,
  aliases = NULL
)

before: Issues list as written by write_issues_report() (the CSV).
now: Issues recomputed for the current concordance with collect_issues() and validation_log = NULL (so accepted cases are still listed).
changes: Change-log rows made after before (see read_changelog()).
log: Validation log (read_validation_log()).
fixes: Named character vector: fix label for each change-log reason.
xpath_var: data.table with xpath and variable_name (current and earlier mappings), so that override changes, which are keyed by xpath, also count as changes to the xpath's variable.
aliases: data.table with old and new for variables renamed wholesale (e.g. the 990-PF names of the v1 PF file to the merged PF names); a variable-level case still fails if the same check fails for any of its new names.

before with columns status, resolution, fix, files, change_ids.