Replace Base64 encoding of ROIs and Functions by JSON marshallizer
Put back base 64 decoder for ROIParameter and FunctionParameter for
files with already existing roi and function actors.
JSON marshal: use generic marshalling methods
Remove the base64 decoder as the resulting value will anyway be an
object with a different ID
Replaced Vectorx2 with ListHashedMap, replaced getMap with toLazyMap
(did the same), thus adjusted the referrers as well.
Updated callers of fit functions
Created actor which reads a list of files, extracts their data and passes each one into the pipeline.
Merge branch 'FileLoading'
Added rename to system properties.
Merge branch 'master' of git@github.com:DawnScience/dawn-workflow.git
Added default values to help with debugging.
Merge remote branch 'origin/master' into edm-python-actor