Fixup macros being used as statements.
Merge pull request #27 from csouth3/fix-macros

Fixup macros being used as statements.
Macros and collections removal from std
Merge pull request #28 from vhbit/master-fallout

Macros and collections removal from std
actually compile and export LruCache
Merge pull request #29 from Gankro/lru-derp

actually compile and export LruCache
Merge branch 'master', remote-tracking branch 'upstream/master'
detach node on remove call
map over removed once
Merge pull request #31 from bwo/fix-lru-remove

Fix lru remove
import `binary_heap` module from `libcollections`
fix `binary_heap` imports and add to project
add comparator traits
parameterize `BinaryHeap` with a comparator
forward comparators' default methods from wrapper to wrapped
make `Cmp` generic in both operands of the relation
remove `OneTypeCmp` and wait for equality constraints in where clauses
update Dijkstra example in `binary_heap`
fix `binary_heap` doc imports