2021.0.0.1

check for null category to avoid null reference exception in issue #18

2021.0.0.0

flat migration to Revit 2021

2020.0.0.1

integrated updated build events and debug settings for Revit 2020 from pull request #16 by @pabloderen

2020.0.0.0

flat migration to Revit 2020

2018.0.0.0

flat migration to Revit 2018

2017.0.0.0

flat migration to Revit 2017

2015.0.0.33

cleaned up readme before migrating to Revit 2017

2015.0.0.32

cleaned up

2015.0.0.31

cleaned up after ana

2015.0.0.30

integrated anapujol's UI to filter parameters, cf. description in #6