Calculate calculates the CommitStats for from commit to another.

CalculateByFile calculates the stats for all files from a commit to another.

Blank represents an empty line.

Code represents a line of code.

Comment represents a line of comment.

Other represents a line from any other kind.

CommitFileStats represents the stats for a file in a commit.

CommitStats represents the stats for a commit.

KindStats represents the stats for a kind of lines in a file.

LineInfo represents the information about a sigle line.

LineKind defines the kind of a line in a file.