.where()/.having() convenient pass-through on null|undefined|{}
version bump
Merge pull request #23 from CSNW/short-circuit-where-null

Short circuit where null
Fixed where() 2nd arg ignored if first is empty
Merge pull request #24 from CSNW/second-arg-ignored

Fixed where() 2nd arg ignored if first is empty
Fixed link in readme
auto-quoting of capitalized cols fixes #25
Added docs for AS keyword
ver bump
Added docs for auto-quoting of capitalized columns
Merge pull request #26 from CSNW/quote-caps

Quote caps