working now needs some cleaning

test

fix bug

fix bugs, reworked a bit

fix bug

updated test

updated test

fixed some bugs, added some docs

more fixes

test

fix pipeline

fix pipeline

math readded

datetime readded

fix issue with delay retrial

fix issue with -1

Fixes !#1209

 fix grouping

test

test fix

test fix

some changes for Bruno comments

moved if inside gen