Change gain precision to have two decimal points

[selinali2010]

Changes

For the Slider component

• Change number input to allow up to two decimal values of precision
• Change range input to allow up to one decimal value of precision

For RangeInput component

• Add new prop incrementPrecision so we can specify the precision of its increment (default of 0 means default to integers)
• Add logic to ensure that the increment matches the provided precision

For backend stuff

• Change setPreampGain to parse float instead of integers
• Change how we read the preamp gain value from the aqua.txt file in the cucumber tests

For tests

• Add arrow test for RangeInput
• Add precision related tests for Slider
• Update cucumber test for preamp gain using arrows to check for 0.3 instead of 3

[h39s]

Looks AMAZING!! Couple nitpicky things and comments

• I notice the numbers truncate when you have trailing zeros. Can we make it so that numbers only truncate to a tenth. (So 4 db should show as 4.0, and 4.01 as is)
• I'm starting to think we should just make the gain box have arrows too for consistency, but also for consistency
  • The quality and gain input boxes should always show 1 decimal place as above.
  • The up/down arrows IN the box itself should adjust both by the tenth of a decimal
  • The slider up and down arrows are fine to increase the gain up and down by a whole decibel instead of a tenth since moving the slider itself only adjusts by whole decimal places
• Moving the slider knob seems to adjust to the closest decibel, can we make it so that it leaves the places after the decimal place the same?
• I think we need to take the plunge on setting the min max limits for the gain to be -20 to 20, the current range is too squished for -30 to 30. On that note, the bands don't actually fill up all the space in their bordered component, could we increase their height (but without changing the preamp gain height?)
• On a separate note so I don't forget, we should start thinking about window resizing (auto resizing when you add a slider within the width of the screen, etc)

[selinali2010]

Looks AMAZING!! Couple nitpicky things and comments

• I notice the numbers truncate when you have trailing zeros. Can we make it so that numbers only truncate to a tenth. (So 4 db should show as 4.0, and 4.01 as is)

• I'm starting to think we should just make the gain box have arrows too for consistency, but also for consistency

  • The quality and gain input boxes should always show 1 decimal place as above.
  • The up/down arrows IN the box itself should adjust both by the tenth of a decimal
  • The slider up and down arrows are fine to increase the gain up and down by a whole decibel instead of a tenth since moving the slider itself only adjusts by whole decimal places
• Moving the slider knob seems to adjust to the closest decibel, can we make it so that it leaves the places after the decimal place the same?
• I think we need to take the plunge on setting the min max limits for the gain to be -20 to 20, the current range is too squished for -30 to 30. On that note, the bands don't actually fill up all the space in their bordered component, could we increase their height (but without changing the preamp gain height?)
• On a separate note so I don't forget, we should start thinking about window resizing (auto resizing when you add a slider within the width of the screen, etc)

Ok, I think I covered almost everything here except a couple:

• I didn't change the max/min gain values for now since I know @xenown is fiddling with the slider heights in his PR so I think it'd be best to wait before making a decision on this
• I wasn't able to find a way to get the range dragging to preserve decimal values unfortunately :(

Notes

• The NumberInputs now compute a maxIntegerDigits value that limits how many numbers can be typed prior to a decimal point.
• Gain and Quality both cap at 1 decimal digit
• Frequency remains unchanged (integer values)
• The slider arrows allow incrementing the gain by +/- and preserves subsequent decimals
• The arrows in the gain input adjust by +/- 0.1