Add increase/decrease command #2680
Description
Is your feature request related to a problem? Please describe.
There are more and more dedicated increase_ commands in libf3d, we should hare a generic command that supports increasing/decreasing int and double options, which would let users define their own bindings for many more options.
This may require #2334
Describe the solution you'd like
- Improvement to option framework to specify a delta by option for increase/decrease
- A new method
options::increase(double mult) - A new command
increase option mult