This version will count lines of code in each file serially. It still
runs all file system operations asynchronously. The only difference now
is that it will only count one file at a time. It is slower, but it
is able to count large repositories without running out of memory.
This change passes in a list of file types to the line counting
analysis. These are the languages for the databases being analyzed.
Line count analysis is restricted to these files.
This commit only adds a single package and all of its transitive
dependencies. The github-linguist package will be used for counting
lines of code as a baseline for databases we are analyzing.
