559.1  Release by donee of power.
  A power to appoint which is exercisable by deed, by will, by deed or will, or otherwise, in whole or to any extent in favor of the donee of the power, the donee’s estate, the donee’s creditors, the creditors of the donee’s estate, or others, is releasable, either with or without consideration, by written instrument executed by the donee. If such instrument shall be executed and acknowledged in the manner provided for the execution and acknowledgment of instruments affecting real estate and recorded with the county recorder in the county in which the donee of the power resides or the county of last residence of the donor of the power of the county in which any real estate which may be subject to the power is located, such recording shall be deemed a sufficient delivery of such release.
  A power to appoint described herein is releasable with respect to the whole or any part of the property subject to such power and is also releasable in such manner as to reduce or limit the persons or objects, or classes of persons or objects in whose favor such power would otherwise be exercisable.
  It is hereby declared that such releases are in accordance with the public policy of this state and are valid and effectual whether heretofore or hereafter made.
[C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §559.1]