fix  kotlin-gradle-plugin-test build
Optimize withIndicies(), cleanup and unify forEachIndexed()
Cleanup ordering, improve API
Clean size/length/first/head properties and functions.
Deprecate size/empty on maps
Cleanup empty list/set/map
Sort map APIs
Clean list/set operations
Collect deprecated code, remove unused private ImmutableArrayList
Use standard emptyList()
Remove js custom emptyList()/emptyMap() implementation.
Add platformStatic to Charsets values.
Stop generating deprecated string functions, move to deprecated folder.
Stop using deprecated APIs
## withIndices (typo in doc)
## withIndices (remove java usage for bootstrap)
## withIndices (docs)
## withIndices – restore withIndices in deprecated form, make withIndex as new form.
Document Pair and Triple
Add Module.md and document packages.