Bedpe parsing

[dominikglodzikhms]

Parsing SVs did not work for me when the 'pe_support' column was missing in my bedpe file with SVs. The documentation implies that the 'pe_support' is optional. When my bedpe file was missing this column, the SV file would parse with errors, implying that parsing columns is by order. Parsing of 'strand1' and 'strand2' columns should be by column name, not column position.