Increment/Decrement doesn't work on step of 0.1

[Dillz42]

What version of Spook are you using?

2.2.4

What version of Home Assistant are you using?

2024.4.4

The problem

Spook doesn't seem to like incrementing or decrementing number entities with a step of 0.1. It looks like this has to do with the check for the amount being a multiple of the step. When incrementing 2 with a step of 0.1, the 'multiple' check gets that 2 is not a multiple of 0.1 due to decimal math inaccuracy (2 % 0.1 = 0.099999999 in python).

Anything in the logs? Paste it here!

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 239, in handle_call_service
    response = await hass.services.async_call(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2543, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2580, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 971, in entity_service_call
    single_response = await _handle_entity_call(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 1043, in _handle_entity_call
    result = await task
             ^^^^^^^^^^
  File "/config/custom_components/spook/ectoplasms/number/services/increment.py", line 35, in async_handle_service
    raise ValueError(msg)
ValueError: ('Amount 2.0 not valid for number.office_desk_upsy_desky_target_desk_height, it needs to be a multiple of 0.1',)