Implement a timer module that takes a commandline argument, the number of seconds the last job took to complete, and displays it if appropriate.
Alters shell initialization files to compute this number using date +%s where needed.
Adds a config section to configure minimum amount of time before timer is shown (default is 2s)
- Replace TableExt with a Config trait that extends toml::value::Table
Add configuration for add_newline
- add_newline is a root-level configuration value. When set to false, the initial newline before the prompt is removed.
