Enable direct text input #4
Description
After implementation of #3, allow for direct text input to Specky instead of buttons.
To start off, this can be implemented for cases where all variables have two options: 0 or 1. All variables would start with the same value if 0. Any variable name typed into Specky would then have its value changed to 1. The user can press continue at any time without indicating a 0 or 1 for every column.
For instance, if annotating species presence and absence in a many-species dataset, all species presences can be set to 0 initially. The user can type in the name of every species heard in the file. When finished annotating, they can press "continue."
Ideally this feature should include text validation, autocomplete, and a method of showing the user what variables they have already typed in for the current file.