Added stream operations to Writer.
Added stream operations to Reader.
Fixed bug causing stack overflow when calling
Section.getProperty(String) for non-existing property name.
Implemented equals() and hashCode() methods for Section, Property and
Value classes. Now these objects can be easily compared to equality.
Merge pull request #1 from NEUROINFORMATICS-GROUP-FAV-KIV-ZCU/master

Added Stream operations to Writer and Reader