convert table to list of maps
added maven-compiler-plugin to postgres extension module
update configuration for maven-javadoc-plugin. Else it would not package with java 8, because there are javadoc warnings.
ref #68 - fixes thread safety for PojoMetadata cache.
Finalizing properties on PojoMetadata
optimized caching using ReentrantReadWriteLock
use views instead of creating new lists
add simple test for table as list map
Merge branch 'dimzon-master'
Merge branch 'master' into query_for_map
Merge pull request #66 from aaberg/query_for_map

convert table to list of maps
Merge branch 'master' into issue-68-thread-safety

Conflicts:
	core/src/main/java/org/sql2o/reflection/PojoMetadata.java
Merge pull request #69 from aaberg/issue-68-thread-safety

Issue 68 thread safety