Adding remove-by-query operation
Merge remote-tracking branch 'remotes/origin/master'

Conflicts:
	pom.xml
	src/main/java/org/springframework/mongo/mappable/MappableMongoOperations.java
	src/main/java/org/springframework/mongo/mappable/support/MappableMongoTemplate.java
	src/test/java/org/springframework/mongo/mappable/support/MappableMongoTemplateTest.java