Merge pull request emirpasic#92 from emirpasic/development

 TreeMap Floor and Ceiling functions

Merge pull request emirpasic#91 from emirpasic/development

LinkedHashMap

- fix emirpasic#85

Merge pull request emirpasic#53 from emirpasic/json

JSON serialization (marshaling) / deserialization (unmarshaling)

Merge pull request emirpasic#52 from emirpasic/development

Fix doubly linked list's element's previous pointer when inserting

Merge pull request emirpasic#51 from emirpasic/development

Development

- time comparator fmt and documentation update

Merge branch 'master' of https://github.com/emirpasic/gods

Merge pull request emirpasic#35 from emirpasic/heap_bulk_push

Heap Bulk Push Optimization

Merge pull request emirpasic#34 from emirpasic/rbt_fix_struct_key

Fix duplicate struct key insertion in red-black tree