Compatibly switch to BSD-2-Clause-Patent.

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "kiss3d-trackball"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Rouven Spreckels <[email protected]>"]
 edition = "2018"
 description = "Virtual Trackball Camera Mode for Kiss3D"
 documentation = "https://doc.qu1x.dev/kiss3d-trackball"
 repository = "https://github.com/qu1x/kiss3d-trackball"
 readme = "README.md"
-license = "BSD-3-Clause"
+license = "BSD-2-Clause-Patent"
 keywords = [
 	"virtual-trackball",
 	"exponential-map",
@@ -23,7 +23,7 @@ include = [
 	"Cargo.toml",
 	"README.md",
 	"RELEASES.md",
-	"LICENSE.md",
+	"LICENSES/*.md",
 ]
 
 [badges]

LICENSES/BSD-2-Clause-Patent.md

@@ -0,0 +1,45 @@
+Copyright © 2021 Rouven Spreckels <[email protected]>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+Subject to the terms and conditions of this license, each copyright holder and
+contributor hereby grants to those receiving rights under this license a
+perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+(except for failure to satisfy the conditions of this license) patent license
+to make, have made, use, offer to sell, sell, import, and otherwise transfer
+this software, where such license applies only to those patent claims, already
+acquired or hereafter acquired, licensable by such copyright holder or
+contributor that are necessarily infringed by:
+
+  * **(a)** their Contribution(s) (the licensed copyrights of copyright holders
+    and non-copyrightable additions of contributors, in source or binary form)
+    alone; or
+  * **(b)** combination of their Contribution(s) with the work of authorship to
+    which such Contribution(s) was added by such copyright holder or
+    contributor, if, at the time the Contribution is added, such addition
+    causes such combination to be necessarily infringed. The patent license
+    shall not apply to any other combinations which include the Contribution.
+
+Except as expressly stated above, no rights or licenses from any copyright
+holder or contributor is granted under this license, whether expressly, by
+implication, estoppel or otherwise.
+
+DISCLAIMER
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

@@ -4,30 +4,43 @@ Virtual Trackball Camera Mode for Kiss3D
 
 [![Build Status][]](https://travis-ci.org/qu1x/kiss3d-trackball)
 [![Downloads][]](https://crates.io/crates/kiss3d-trackball)
+[![Recent Downloads][]](https://crates.io/crates/kiss3d-trackball)
 [![Rust][]](https://www.rust-lang.org)
 [![Version][]](https://crates.io/crates/kiss3d-trackball)
 [![Documentation][]](https://doc.qu1x.dev/kiss3d-trackball)
-[![License][]](https://opensource.org/licenses/BSD-3-Clause)
+[![License][]](https://spdx.org/licenses/BSD-2-Clause-Patent.html)
 
 [Build Status]: https://travis-ci.org/qu1x/kiss3d-trackball.svg
 [Downloads]: https://img.shields.io/crates/d/kiss3d-trackball.svg
+[Recent Downloads]: https://img.shields.io/crates/dr/kiss3d-trackball.svg
 [Rust]: https://img.shields.io/badge/rust-stable-brightgreen.svg
 [Version]: https://img.shields.io/crates/v/kiss3d-trackball.svg
 [Documentation]: https://docs.rs/kiss3d-trackball/badge.svg
 [License]: https://img.shields.io/crates/l/kiss3d-trackball.svg
 
-Complements common [trackball operation handlers] with [`kiss3d`] specific [`Input`] resulting
-in a compound [`Trackball`] [`Camera`] mode implementation for the [`kiss3d`] graphics library.
+Complements the [trackball library] with Kiss3D-specific [`Input`] resulting in a compound
+[`Trackball`] camera mode implementation for the [Kiss3D graphics library].
+
+See the [release history](RELEASES.md) to keep track of the development.
+
+[trackball library]: https://github.com/qu1x/trackball
+[Kiss3D graphics library]: https://github.com/sebcrozet/kiss3d
 
-[trackball operation handlers]: https://doc.qu1x.dev/kiss3d-trackball/trackball/index.html#structs
-[`kiss3d`]: https://doc.qu1x.dev/kiss3d-trackball/kiss3d/index.html
 [`Input`]: https://doc.qu1x.dev/kiss3d-trackball/kiss3d_trackball/struct.Input.html
 [`Trackball`]: https://doc.qu1x.dev/kiss3d-trackball/kiss3d_trackball/struct.Trackball.html
-[`Camera`]: https://doc.qu1x.dev/kiss3d-trackball/kiss3d/camera/trait.Camera.html
 
 ## License
 
-[BSD-3-Clause](LICENSE.md)
+The works are [licensed](LICENSES/BSD-2-Clause-Patent.md) under the [`BSD-2-Clause-Patent`].
+
+This license is designed to provide:
+
+  * a simple permissive license,
+  * that is compatible with the [`GPL-2.0-or-later`], and
+  * which also has an express patent grant included.
+
+[`BSD-2-Clause-Patent`]: https://spdx.org/licenses/BSD-2-Clause-Patent.html
+[`GPL-2.0-or-later`]: https://spdx.org/licenses/GPL-2.0-or-later.html
 
 ## Contribution
 

RELEASES.md

@@ -1,3 +1,7 @@
+# Version 0.1.1 (2021-04-08)
+
+  * Switch to [BSD-2-Clause-Patent](LICENSES/BSD-2-Clause-Patent.md).
+
 # Version 0.1.0 (2021-04-03)
 
   * Add trackball implementation.

src/lib.rs

@@ -1,6 +1,6 @@
 //! Virtual Trackball Camera Mode for Kiss3D
 //!
-//! Complements common [`trackball`] operation handlers with [`kiss3d`] specific [`Input`] resulting
+//! Complements common [`trackball`] operation handlers with [`kiss3d`]-specific [`Input`] resulting
 //! in a compound [`Trackball`] [`Camera`] mode implementation for the [`kiss3d`] graphics library.
 
 use kiss3d::{