add licenses for derived code

LICENSE

@@ -1 +1,69 @@
-(C) JuliaHub Inc. 2022-2023. All rights reserved.
+(C) JuliaHub Inc. 2022-2023. All rights reserved.
+
+===============================================================================
+
+Parts of the code in the PlanarMechanics submodule have been adapted from the PlanarMechanics modelica library, which is licensed under the 3-Clause BSD License. The original license text is included below.
+
+BSD 3-Clause License
+
+Copyright (c) 2010-2023, Deutsches Zentrum fuer Luft- und Raumfahrt e.V.
+All rights reserved.
+
+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.
+
+3. Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+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 HOLDER 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.
+
+===============================================================================
+
+Parts of the code in Multibody.jl have been adapted from the Modelica Standard Library, which is licensed under the 3-Clause BSD License. The original license text is included below.
+
+BSD 3-Clause License
+
+Copyright (c) 1998-2024, Modelica Association and contributors
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+* 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.
+
+* Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+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 HOLDER 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.

src/PlanarMechanics/joints.jl

@@ -19,8 +19,6 @@ A revolute joint
 - `fixed` [Fixed](@ref) if `axisflange == false`
 - `flange_a` [Flange](@ref) if `axisflange == true`
 - `support` [Support](@ref) if `axisflange == true`
-
-https://github.com/dzimmer/PlanarMechanics/blob/743462f58858a808202be93b708391461cbe2523/PlanarMechanics/Joints/Revolute.mo
 """
 @component function Revolute(;
  name,
@@ -102,8 +100,6 @@ A prismatic joint
  - `fixed` [Fixed](@ref) if `axisflange == false`
  - `flange_a` [Flange](@ref) if `axisflange == true`
  - `support` [Support](@ref) if `axisflange == true`
-
-https://github.com/dzimmer/PlanarMechanics/blob/743462f58858a808202be93b708391461cbe2523/PlanarMechanics/Joints/Prismatic.mo
 """
 @component function Prismatic(;
  name,

src/PlanarMechanics/sensors.jl

@@ -10,7 +10,6 @@ Partial absolute sensor model for sensors defined by components
  frame_a = Frame()
  end
  # TODO: assert the number of connections
- # https://github.com/dzimmer/PlanarMechanics/blob/443b007bcc1522bb172f13012e2d7a8ecc3f7a9b/PlanarMechanics/Sensors/Internal/PartialAbsoluteSensor.mo#L11
 end
 
 """
@@ -28,7 +27,6 @@ Partial relative sensor model for sensors defined by components
  frame_b = Frame()
  end
  # TODO: assert the number of connections
- # https://github.com/dzimmer/PlanarMechanics/blob/443b007bcc1522bb172f13012e2d7a8ecc3f7a9b/PlanarMechanics/Sensors/Internal/PartialRelativeSensor.mo#L12-L13
 end
 
 """
@@ -47,7 +45,7 @@ Partial absolute sensor models for sensors defined by equations (frame_resolve m
 
  @equations begin
  # TODO: assert the number of connections
- # https://github.com/dzimmer/PlanarMechanics/blob/443b007bcc1522bb172f13012e2d7a8ecc3f7a9b/PlanarMechanics/Sensors/Internal/PartialAbsoluteBaseSensor.mo#L20-L21
+
  frame_a.fx ~ 0
  frame_a.fy ~ 0
  frame_a.tau ~ 0
@@ -75,7 +73,7 @@ Partial relative sensor models for sensors defined by equations (frame_resolve m
 
  @equations begin
  # TODO: assert the number of connections
- # https://github.com/dzimmer/PlanarMechanics/blob/443b007bcc1522bb172f13012e2d7a8ecc3f7a9b/PlanarMechanics/Sensors/Internal/PartialRelativeBaseSensor.mo#L19-L21
+
 
  frame_a.fx ~ 0
  frame_a.fy ~ 0
@@ -327,7 +325,7 @@ end
  systems = [frame_a, frame_b, frame_resolve, x_in, y_in, phi_in, x_out, y_out, phi_out]
  eqs = [
  # TODO: assert the number of connections
- # https://github.com/dzimmer/PlanarMechanics/blob/443b007bcc1522bb172f13012e2d7a8ecc3f7a9b/PlanarMechanics/Sensors/Internal/BasicTransformAbsoluteVector.mo#L42-L43
+
  frame_a.fx ~ 0,
  frame_a.fy ~ 0,
  frame_a.tau ~ 0,