Continued CSV parsing:

Continued CSV parsing:
- Introduced readCsvFileLine() which reads a line from a CSV file and parses it to an indexed array
- Introduced readLine() which will read a line (not limited) from a text file
- Method read() will now work without parameters (depending on implementation, e.g. binary files must always be read with a buffer length)
- Other improvements
- TODOs.txt updated

Signed-off-by: Roland Häder <roland@mxchange.org>