[TASK] Write to file directly

Save some costly memory by writing to the file directly instead of
keeping the whole file in memory.
[FEATURE] Report peak memory usage and end with a newline
[FEATURE] Add support for escaped class names
[FEATURE] Use TYPO3 API for the command line launcher
[FEATURE] Make it possible to override the output file
[FEATURE] Make including the class aliases optional
[FEATURE] Allow to limit the extensions (part1)
[BUGFIX] Create class directly to avoid double inclusion
[FEATURE] Include basic parametar handling
[TASK] Small cleanups
[BUGFIX] Exclude class alias breaks generation
Merge pull request #2 from pgampe/master

Add support for escaped class names and some cleanup