Additional JOSM condition selectors

- [ ] `!~`: negated ​Regular expression match
- [ ] `∈`: contains
- [ ] `⧉`: overlaps
- [ ] `way[/^addr:/]`: Presence of tag by ​Regular expression match
- [x] `way[oneway?]`: Testing for truth value
- [x] `way[oneway?!]`: Testing for false value
- [ ] `!.xxx`: class xxx not set