CAS preparations
Prepare for CAS; refactor inode
Interesting invalid mem access on CAS
Fix CAS for empty slot in first cnode
Add CAS for lnode creation
Rewrite traversal, add CAS for memory modifications,
add delete of whole ctrie, add first set of frees
Merge branch 'feature/cas'

* feature/cas:
  Rewrite traversal, add CAS for memory modifications, add delete of whole ctrie, add first set of frees
  Add CAS for lnode creation
  Fix CAS for empty slot in first cnode
  Interesting invalid mem access on CAS
  Prepare for CAS; refactor inode
  CAS preparations