Merge pull request #5 from ilvalle/master

test with_alias and basic opetarions for Expression
deprecated __getslice__ replaced with __getitem__
Merge pull request #6 from ilvalle/getitem

Deprecated __getslice__ replaced with __getitem__
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Fix issue 1966: Avoid inserting duplicate archive records with record versioning #568
Merge pull request #8 from niphlod/fix/informix

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added ANY and few fix for the new postgres adapter
enabled postgres2 in travis-ci tests
Merge pull request #10 from ilvalle/new-postgres

Few fix for NewPostgreSQLAdapter
Merge pull request #9 from kjkuan/avoid-duplicate-record-versioning-records

Fix issue 1966: Avoid inserting duplicate archive records with record versioning #568
replaced password with passwd in SybaseAdapter
Merge pull request #11 from ilvalle/sybase

replaced password with passwd in SybaseAdapter
readme fixes
Merge pull request #12 from niphlod/fix/readme_badges

readme fixes
A better README
Merge pull request #14 from gi0baro/master

A better README
Removed web2py logic for default validators, changed way of use DAL.validators, added custom validator_method attribute
Fix '%(schema)s' conversion in DropGeometryColumn
Merge pull request #15 from ilvalle/fix-DropGeometryColumn

Fix '%(schema)s' conversion in DropGeometryColumn