Fixes to globals used for tracking statistics (#118)
Fixes to globals used for tracking statistics (#118)

- Collect globals in `scourString()` and make sure they're all properly initialized to zero. Before statistics were wrong when scouring multiple files/strings because initialization was only done once when loading the module.
- harmonize names
- adjust according to PEP 8 while at it (including leading underscore to mark as non-public)
- include one missing variable in statistics output (number of comments removed)

scour-project/scour,Ede123/scour,oberstet/scour,codedread/scour