Progressbar crash on start

[ibigpapa]

windows expects int32 values for maximum and value. core spec is working with floats.
Adjusted the windows implementation to convert float to integer by setting a 3 decimal place precision for max value to cover edge cases. Inserted not supported max for windows. Now the value gets converted to a percentage of max (1000). Will not allow you to go over max and under min will instead just set to max or min respectively. Also added if None is passed in then the default is to use the min value as the value.

#504

PR Checklist:

• [x ] All new features have been tested
• [x ] All new features have been documented
• [x ] I have read the CONTRIBUTING.md file
• [x ] I will abide by the code of conduct

[danyeaw]

Thanks for the contribution this is a great start! I talked to @freakboy3742 more about the ProgressBar. I don't think this is documented well right now, but the value is not always a percentage. It is the value out of the max. The only time when value is a percentage is when the max is set to 100. Other use cases may be if the program calculated time that an operation is expected to take, then you set the max to this time. Does WinForms support an indeterminate state, for example if the total time was being calculated? We would want this to be displayed when the value = None. Also if we want to make the interface always be a float or int, that could be changed if supporting both is too difficult.

[phildini]

Hi there! It looks like this PR might be dead, so we're closing it for now. Feel free to re-open it if you'd like to continue. 😄