Fix Processing Functions. Introduce custom target Parameter.

See merge request !343

flags data and result properties of SaQC

See merge request !342

callWrapper in register decorator becomes a Class

See merge request !339

- added property flags
- added property flagsRaw
- added property data
- added property dataRaw
- added property result
- added Result class
- rm Accessors
- fixed test that rely on getResult

Multivariate functions

See merge request !340

History sensitive plots

See merge request !317

unused KW-warning removed

Closes #242

See merge request !341

Included new input format in flag Manual

See merge request !318

# Conflicts:
#   saqc/core/core.py

catch errors introduced by the last call in a call chain