Refactored handling of named parameters. Makes it easier to reuse and extend.
changed sql parameter parsing to use strategy pattern.
moved setting of parameters on PreparedStatement to Quirks
Merge pull request #95 from aaberg/refactor-NamedParameterHandler

Refactored handling of named parameters.
Merge branch 'dimzon-master'

Conflicts:
	core/src/main/java/org/sql2o/quirks/NoQuirks.java
	core/src/main/java/org/sql2o/quirks/Quirks.java
some cleaning
Merge pull request #103 from aaberg/cleanup

some cleaning
isolated set of Converters allows having 2 different
sql2o instance with different set of converters without conflicts.