Keymaps have previously been exported with an encoding dependent
on the current system locale. This caused issues when the
keymap contained non-ASCII characters, for instance in a string
property for an operator.
Reviewed By: campbellbarton
Differential Revision: https://developer.blender.org/D9449
In practice, there are only a limited number of operations we need to
use repeat such as navigation, stepping operations that cycle states
and text input.
Now we don't need to disable repeat explicitly when a modal operator
uses checks for a key being held as was needed for 17cb2a6da0c88.
Repeat is now included in exported keymaps.
Use versioning so existing exported keymaps are loaded properly.
For full keymaps, ensure keymap items are lists to allow predictable
manipulation at runtime.
When calling `keymap_init_from_data` directly, allow any sequence type
to allow tools to define their keymaps as tuples.
Ensure we use lists for keymap items and item properties.
This means scripts can access keymap definitions from other layouts,
manipulating them without sometimes encountering a tuple that needs
to be converted into a list.
bpy_extras were meant to be useful high-level helper functions for
script authors to perform common operations,
to avoid writing to verbose API's.
bpy_extras.keymap_utils contains some specialized API calls
mainly intended for Blender's own internal use.
Move keymap import export to internal API.
