Added connection pooling support using 'pg' module's in-build connection pooling mechanism
Fix: some variables used by parent class 'BaseSQL' are fixed. tests passed
avoid underscore.js
Restore configuration option 'ssl'
Fix style
0.0.5
fixed bug with single column indexes whose column name needed to be escaped
Merge branch 'composite_indexes'
Merge remote-tracking branch 'upstream/master' into composite_indexes

Conflicts:
	lib/postgres.js
Merge branch 'composite_indexes'