A simple holder for change items
In 4.4 the behaviour of this domain object was changed to add support for changes that can can have multi value states
for instance an affectedVersion could change from the state "4.4 4.4.1" -> "4.4 4.4.1 4.4.2"
To this end end extra methods are added getFroms(), getTos() that return a map of all the changes in a single change item
getFrom and getTo will return the first change in this list, this will not break behaviour for any of the supported
single value fields. For Versions and other multi value fields the behaviour of getFrom(), getTo(), getFromValue()
and get ToValue() will return only the first change in the map. It is preferred to use getFroms and getTos in this case.
getFrom(), getTo(), getFromValue() and getToValue() are therefore all marked as deprecated and may be removed
in future versions.