...
v1.5.0 - Custom field types:
Sub Tasks,
Linked Issues (temporary read-only),
Epic name
v1.4.2 - Custom field types:
...
v1.3.0 - Custom field types:
parent (temporary read-only),
resolution,
resolution date,
Remaining Estimate (temporary read-only),
Original Estimate (temporary read-only),
time spent (temporary read-only),
updated.
...