Barbell Plus 4+

I have been following some olympic weightlifting programming the last six months and have been using this app almost daily. Along the way I have added several shortcuts to make certain workflows more efficient so I can get answers quick and focus on my workout. In particular I have added several new shortcuts for calculating percentages. I hope you find them as useful as I have.

- A value can now be assigned to memory by typing in the value and pressing `->mem` instead of needing to press `alt` `->mem` or `=` `alt` `->mem`. Prior `alt` `->mem` functionality is still supported. Memory, as before, can be cleared by assigning the value of 0.
- A value can now entered in the alternate unit and be assigned to memory by typing in the value and pressing `alt` `lb->mem` or `alt` `kg->mem`. This is a shortcut for the prior workflow of entering the value, pressing `alt` `lb->kg` or `alt` `kg->lb` to convert to the selected unit, and then pressing `alt` `->mem` to assign to memory.
- A custom barbell value can now be assigned by typing in the value and pressing `->bar` instead of needing to press `alt` `->bar` or `=` `alt` `->bar`. Prior `alt` `->bar` functionality is still supported.
- A custom barbell value, if set, will now be stored and made available as an option to select along with the default barbell values. This custom value can be removed by assigning the value of 0.
- Percentages can now be calculated based on the current value or a value assigned to memory. Percentage buttons will display as `%m` instead of `%` when a value is assigned to memory indicating that they will calculate a percentage of the value in memory. You can press `alt` to access the standard `%` functionality and calculate a percentage based on the current value.
- You can now calculate an arbitrary percentage by simply typing in a percentage and pressing `%` (or `%m`).
- Full prior `%` functionality is still available allowing you to multiply, divide, add, or subtract a percentage of the current value. The calculation will happen immediately when `%` is pressed now instead of waiting for `=` to be pressed.
- You can use `+` or `-` with `%m` to add or subtract any percentage of the value in memory to the current value.