Remove columns from Relation
Implement ? to make columns into Options
Correct non-OptionExtractor exception for BigDecimals
Complete move to sbt-boilerplate
Implement cross join
Allow select statements to be used in scalar subqueries
First try
OLAP and window functions
Select composition
Compose operation for MappedColumnType.
Merge pull request #8 from DavidGregory084/issue4

Compose operation for MappedColumnType.
Merge branch 'master' into db2-typed-params

Conflicts:
	core/src/main/scala/sqlest/sql/base/BaseStatementBuilder.scala
	core/src/test/scala/sqlest/sql/Db2StatementBuilderSpec.scala
	core/src/test/scala/sqlest/sql/SelectStatementBuilderSpec.scala