sequencer with step mode, first draft, not fully working yet
sequencer initialization fixed
sequencer with step mode improved
methods for logging std::ostream and unsigned int added
sequencer with step mode improved, not yet ready for use
log writer class added for logging to syslog (unix only at the moment)
simple text user interface for sequencer added, not fully working yet
logging support for long integers implemented
sequencer improved (several bugs fixed)
user interface for sequencer improved
text user interface prepared for using as logging output
Merge branch 'develop' into sequencer

Conflicts:
	CMakeLists.txt
Merge remote-tracking branch 'mzueger/develop' into sequencer

Conflicts:
	CMakeLists.txt
	includes/eeros/logger/LogWriter.hpp
	includes/eeros/logger/StreamLogWriter.hpp
	src/logger/StreamLogWriter.cpp
sequencer: run method with return value and parameters introduced, addStep removed
sequencer/curses ui: manual selection of command sequences fixed
sequencer: old unit tests removed
sequencer example updated, message output added to curses ui
cmake file changed: build simple sequencer example only, if ncurses is available
sequence: different return value for pre- and post condition check failure
trajectory generator base template added