Touchpad panning in pl_editor

[Heath Raftery]

There has been some transformational work in both eeschema and pcbnew on supporting trackpads and the Magic Mouse, which are the two common input methods in macOS. For me, the ability to set "touchpad panning" (which applies to the mouse as well and is now the default) is the difference between Kicad being useful or novelty on macOS, so a big thank you to those that implemented it!

This bug is relatively simple then - pl_editor (aka PL Editor or Page Layout Editor) has no such equivalent feature!

Relevant bug for eeschema/pcbnew: https://bugs.launchpad.net/kicad/+bug/1546815
Relevant forum thread: https://forum.kicad.info/t/zooming-and-panning-in-os-x-with-magic-mouse/1256/12
Some discussion on adding to pl_editor: https://<email address hidden>/msg12398.html

Application: pl_editor
Version: (5.0.1-3-g963ef8bb5), release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.54.0 LibreSSL/2.6.4 zlib/1.2.11 nghttp2/1.24.1
Platform: Mac OS X (Darwin 18.2.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.4 (UTF-8,STL containers,compatible with 2.8)
    Boost: 1.67.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.54.0
    Compiler: Clang 10.0.0 with C++ ABI 1002

Build settings:
    USE_WX_GRAPHICS_CONTEXT=ON
    USE_WX_OVERLAY=ON
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Jeff Young (jeyjey)]

This is fixed in 5.1.