* Add topics to forth. Fixes #851

* Add topics to forth. Fixes #851
* Add topics exception_handling, strings, lists, logic to forth

* Add topics to custom set. Fixes #937

* Add topics to custom set. Fixes #937
* Add generics to list of topics for custom set

* Add topics to binary search tree. Fixes #939

* Add topics to binary search tree. Fixes #939
* Add generics to topics for binary search tree
* Remove recursion from topics for binary search tree

* #925 add topics to simple linked list exercise

* added exception_handling to topics for simple linked list

* added topics for book store

* added topic to book stores

* Issue #923 add topics to linked list

* Update linked-listst Topics with generics

* Added topics for sublist problem

* Added enumeration and generics to sublist topics

* Added topics for sublist problem

* added topics for robot-name

* added changes to topics for robot name 920

* Add topics to all-your-base problem

* Add exception_handling topic

* added topics in bracket-push, simple-cipher, crpto-square and atbash-cipher

* added topics in bracket-push, simple-cipher, crpto-square and atbash-cipher

* topics added for slug- palindrome- products

* modified topics for slug- palindrome-products

* added topics for robot simulator

* removed algorithms as topic

* Add topics to flatten-array

* Fixed identation to 2 spaces

* Added Tournament exercise

* Added to config and refactored after review

* Added topics and fixed indentation

* Must be unlocked by a core exercise

* Adding topics to prime factors

* Adding math as problem area

* Removing recursion as a topic

* Completes #853

* Add more topics to problem Kindergarten-garden

* Correct the identation

* Correct the identation again

* added topics to perfect numbers

* updated topics

* fixed tabs

Removed recursion

Re-arrange to put "loops" before "maps".