Add partial support of DATE, TIME, and TIMESTAMP data types to PgServer

Use result of ArrayList.remove()

Add ceilingKey() and floorKey() to TransactionMap (version 2)

Add MDY to DateStyle in PgServerThread

Client may send just ISO but expect value with secord part just after that,
so append it to client setting too.

Sort files in generated jars

Change return type of Value.getBoolean() to boolean (unwrapped)

Inherit classpath from parent process

Switch to JaCoCo code coverage

Update lists of keywords

Map DATE in Oracle mode to ValueTimestamp

Assorted changes