This software is Copyright (c) 2016 - 2018 by Dave Rolsky.

This is free software, licensed under:

  The Artistic License 2.0 (GPL Compatible)

		       The Artistic License 2.0

	    Copyright (c) 2000-2006, The Perl Foundation.

     Everyone is permitted to copy and distribute verbatim copies

      of this license document, but changing it is not allowed.

Preamble

This license establishes the terms under which a given free software

Package may be copied, modified, distributed, and/or redistributed.

The intent is that the Copyright Holder maintains some artistic

control over the development of that Package while still keeping the

Package available as open source and free software.

You are always permitted to make arrangements wholly outside of this

license directly with the Copyright Holder of a given Package.  If the

terms of this license do not permit the full use that you propose to

make of the Package, you should contact the Copyright Holder and seek

a different licensing arrangement. 

Definitions

    "Copyright Holder" means the individual(s) or organization(s)

    named in the copyright notice for the entire Package.

    "Contributor" means any party that has contributed code or other

    material to the Package, in accordance with the Copyright Holder's

    procedures.

    "You" and "your" means any person who would like to copy,

    distribute, or modify the Package.

    "Package" means the collection of files distributed by the

    Copyright Holder, and derivatives of that collection and/or of

    those files. A given Package may consist of either the Standard

    Version, or a Modified Version.

    "Distribute" means providing a copy of the Package or making it

    accessible to anyone else, or in the case of a company or

    organization, to others outside of your company or organization.

    "Distributor Fee" means any fee that you charge for Distributing

    this Package or providing support for this Package to another

    party.  It does not mean licensing fees.

    "Standard Version" refers to the Package if it has not been

    modified, or has been modified only in ways explicitly requested

    by the Copyright Holder.

    "Modified Version" means the Package, if it has been changed, and

    such changes were not explicitly requested by the Copyright

    Holder. 

    "Original License" means this Artistic License as Distributed with

    the Standard Version of the Package, in its current version or as

    it may be modified by The Perl Foundation in the future.

    "Source" form means the source code, documentation source, and

    configuration files for the Package.

    "Compiled" form means the compiled bytecode, object code, binary,

    or any other form resulting from mechanical transformation or

    translation of the Source form.

Permission for Use and Modification Without Distribution

(1)  You are permitted to use the Standard Version and create and use

Modified Versions for any purpose without restriction, provided that

you do not Distribute the Modified Version.

Permissions for Redistribution of the Standard Version

(2)  You may Distribute verbatim copies of the Source form of the

Standard Version of this Package in any medium without restriction,

either gratis or for a Distributor Fee, provided that you duplicate

all of the original copyright notices and associated disclaimers.  At

your discretion, such verbatim copies may or may not include a

Compiled form of the Package.

(3)  You may apply any bug fixes, portability changes, and other

modifications made available from the Copyright Holder.  The resulting

Package will still be considered the Standard Version, and as such

will be subject to the Original License.

Distribution of Modified Versions of the Package as Source 

(4)  You may Distribute your Modified Version as Source (either gratis

or for a Distributor Fee, and with or without a Compiled form of the

Modified Version) provided that you clearly document how it differs

from the Standard Version, including, but not limited to, documenting

any non-standard features, executables, or modules, and provided that

you do at least ONE of the following:

    (a)  make the Modified Version available to the Copyright Holder

    of the Standard Version, under the Original License, so that the

    Copyright Holder may include your modifications in the Standard

    Version.

    (b)  ensure that installation of your Modified Version does not

    prevent the user installing or running the Standard Version. In

    addition, the Modified Version must bear a name that is different

    from the name of the Standard Version.

    (c)  allow anyone who receives a copy of the Modified Version to

    make the Source form of the Modified Version available to others

    under

	(i)  the Original License or

	(ii)  a license that permits the licensee to freely copy,

	modify and redistribute the Modified Version using the same

	licensing terms that apply to the copy that the licensee

	received, and requires that the Source form of the Modified

	Version, and of any works derived from it, be made freely

	available in that license fees are prohibited but Distributor

	Fees are allowed.

Distribution of Compiled Forms of the Standard Version 

or Modified Versions without the Source

(5)  You may Distribute Compiled forms of the Standard Version without

the Source, provided that you include complete instructions on how to

get the Source of the Standard Version.  Such instructions must be

valid at the time of your distribution.  If these instructions, at any

time while you are carrying out such distribution, become invalid, you

must provide new instructions on demand or cease further distribution.

If you provide valid instructions or cease distribution within thirty

days after you become aware that the instructions are invalid, then

you do not forfeit any of your rights under this license.

(6)  You may Distribute a Modified Version in Compiled form without

the Source, provided that you comply with Section 4 with respect to

the Source of the Modified Version.

Aggregating or Linking the Package 

(7)  You may aggregate the Package (either the Standard Version or

Modified Version) with other packages and Distribute the resulting

aggregation provided that you do not charge a licensing fee for the

Package.  Distributor Fees are permitted, and licensing fees for other

components in the aggregation are permitted. The terms of this license

apply to the use and Distribution of the Standard or Modified Versions

as included in the aggregation.

(8) You are permitted to link Modified and Standard Versions with

other works, to embed the Package in a larger work of your own, or to

build stand-alone binary or bytecode versions of applications that

include the Package, and Distribute the result without restriction,

provided the result does not expose a direct interface to the Package.

Items That are Not Considered Part of a Modified Version 

(9) Works (including, but not limited to, modules and scripts) that

merely extend or make use of the Package, do not, by themselves, cause

the Package to be a Modified Version.  In addition, such works are not

considered parts of the Package itself, and are not subject to the

terms of this license.

General Provisions

(10)  Any use, modification, and distribution of the Standard or

Modified Versions is governed by this Artistic License. By using,

modifying or distributing the Package, you accept this license. Do not

use, modify, or distribute the Package, if you do not accept this

license.

(11)  If your Modified Version has been derived from a Modified

Version made by someone other than you, you are nevertheless required

to ensure that your Modified Version complies with the requirements of

this license.

(12)  This license does not grant you the right to use any trademark,

service mark, tradename, or logo of the Copyright Holder.

(13)  This license includes the non-exclusive, worldwide,

free-of-charge patent license to make, have made, use, offer to sell,

sell, import and otherwise transfer the Package with respect to any

patent claims licensable by the Copyright Holder that are necessarily

infringed by the Package. If you institute patent litigation

(including a cross-claim or counterclaim) against any party alleging

that the Package constitutes direct or contributory patent

infringement, then this Artistic License to you shall terminate on the

date that such litigation is filed.

(14)  Disclaimer of Warranty:

THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS

IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE IMPLIED

WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR

NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL

LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL

BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF

ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.