Moved all projects into the root directory.
Tidying up repo.
More repo tidy up.
Implemented a simple version of new SQLiteDatabaseReader. Added new JDBCMetaDataReader class to centralise the reading of tables and columns from JDBC meta data. Added a test for SQLiteDatabaseReader implementation. Fixed a few bugs in PoiJoiManager around determining and using FormatType.
Introduced a few new JDBC related classes to be used when reading/writing databases. Renamed SQLiteDatabaseCreator to SQLiteDatabaseWriter. Moved jdbc related classes into core package (.io.jdbc).
Implemented an ODS spreadsheet writer class and added a new test for it. Reinstated the XLSSpreadsheetWriterTest and modified it to work from in-memory meta data instead of bring in other project dependencies.
Added a top level build.gradle file to centralise configuration for all projects. At the moment it contains just a testReport task which can be used to run all the tests against all of the projects and combine the reports into one place.
Added jar configuration details to top level and all project build.gradle files.  Currently set version to '0.5' and classifier to 'SNAPSHOT'.
Implemented a simple test for the SQLiteDatabaseWriter meaning all current IO extensions for Poijoi have tests for both readers and writers.
Added a new project to include XLSX support.
Added updated xslx test spreadsheet and adjusted value assertions to match contents.
Raised version to 0.6
Merge remote-tracking branch 'upstream/master'