Add missing accessors on CastNode.
Get rid of type on NULL in CASE. Let caller handle this.
merge MMcM:  Get rid of type on NULL in CASE. Let caller handle this.

Merge pull request #77 from MMcM/sql-parser/cast-node-accessor
https://github.com/FoundationDB/sql-parser/pull/77
Add some missing accessors related to constraints.
Collapse referential actions: allow ON UPDATE CASCADE, for instance.
Release 1.0.17
Bump version to 1.1.0
merge nathanlws: Release 1.0.17 and bump version to 1.1.0

Merge pull request #79 from FoundationDB/sql-parser/bump-version-1.1.0
https://github.com/FoundationDB/sql-parser/pull/79
merge MMcM: Parser changes need by FOREIGN KEY support

Merge pull request #78 from MMcM/sql-parser/constraint-accessors
https://github.com/FoundationDB/sql-parser/pull/78
Remove stale script
merge nathanlws: Remove stale release script

Merge pull request #80 from nathanlws/sql-parser/rm-release-script
https://github.com/FoundationDB/sql-parser/pull/80