Added ALTER TABLE support (add/drop column)
Regression on column update logic where null values are throwing a NPE on val.toNode
Merge pull request #27 from jmreidy/fix_update_regression

Fix update query regression
version bump
Added DROP TABLE support and IF (NOT) EXISTS
Merge branch 'alter-table' into drop-and-alter

Conflicts:
	lib/dialect/postgres.js
	lib/node/query.js
	lib/table.js
Merge pull request #29 from CSNW/drop-and-alter

Drop and alter closes #28 and #27
version bump
version bump