Simplified loose/tight logic. Closes #50
Fixed `Ruler.after()` method
Add validation mode to all inline rules
Tweak emphasis parsing algorithm

In the case of intersecting tags (e. g. "*foo _bar* baz_") last
complete tag should have a priority.
Remove dead code in em/del
StateInline props rename
Linkify fix. Closes #51
Browser files rebuild
1.1.1 released