Fixes PooledEntity ids not being properly recycled issue #82
Fixes iterator problem when adding/removing entities from entity listeners handlers issue #81
Fixes GWT crash when using PooledEngine
Ups Ashley version to 1.3.2 post release
long instead of Long
instanceof already does a null check
Switch is faster than if
registerFamily can return the immutableEntities. No need to manually get them afterwards
No need to call get twice
Merge pull request #88 from Lusito/uuid_Long_to_long

long instead of Long
Merge pull request #89 from Lusito/not_necessary

Performance improvements
Fix javadoc bug for java version prior to 8.

This option is unsuported with javadoc compiler prior to 8 and make the task failed.
hashcode compatible to java versions prior to 8
Merge pull request #92 from Lusito/uuid_Long_to_long

Entity.hashcode compatible to java versions prior to 8.
Merge pull request #91 from KyuBlade/patch-1

Fix javadoc bug for java version prior to 8.
Update from master, notify on add/remove operations.