Function report_summary 

pub fn report_summary(
    config: &Config,
    dates: &[String],
    projs: &[String],
) -> Result<()>

Print the summary report for each supplied day.

Errors

• Return PathError::FilenameMissing if the log file is missing.
• Return PathError::InvalidPath if the path part of the log file is not a valid path.
• Return PathError::FileAccess if the file cannot be opened.
• Return Error::BadProjectFilter if the supplied project Regexes are not valid
• Return Error::DateError if the start date is not before the end date