Release v.2.0.8

Updates:

• access to StringFileInfo strings of version information resources
• more overlay and packer signatures
• visualizer diff image
• import categories and descriptions
• started to implement DiffReportCreator

Bugfixes:

• issue #7: negative seek offset error solved
• issue #6: export ordinal table with negative entry number fixed
• issue #6: version fix
• issue #5: ordinal export table with invalid offset