Fix warnings for DMD 2.063
Merge pull request #14 from ilya-stromberg/master

Fix warnings for DMD 2.063
Add DUB build system support.
Merge pull request #15 from ilya-stromberg/master

Add DUB build system support.
authors
Fix authors
Add license
Generate static bindings by default
Use original derelict:pq package
Print debug message only in debug version
Merge pull request #19 from ilya-stromberg/master

Generate static bindings by default
dependencies fixed
Merge pull request #21 from denizzzka/integration_tests

dependencies fixed
unused code removed
unused code removed
unavail version code (trying to select any version)
Merge branch 'master' of github.com:denizzzka/dpq2 into integration_tests
readme
unittests -> integration_tests
cosmetic