Update to version 3.13.3

3.13.3:

• Fix syntax highlighting under Windows (Kai Willadsen)
• Update Windows build for newer pygi bundled libraries (Kai Willadsen)
• Fixes for incorrect descriptions in manual (Anders Jonsson, Kai Willadsen)

3.13.2:

• Several fixes for argument handling and tab creation:
  • Create --diff created comparisons after args-created ones (Kai Willadsen)
  • Fix --label flag incorrectly applying to --diff created comparisons (Kai Willadsen)
  • Create --diff created comparisons after args-created ones (Kai Willadsen)
  • Fix relative path interpretation for --output when created from a secondary instance (Kai Willadsen)
  • Fix window presentation ordering when creating a secondary instance (Kai Willadsen)
• Several fixes to unicode filename handling in git comparisons and manually-assigned labels (Kai Willadsen)
• Fix incorrect comparison display caused by unicode (U+2028) newline (Kai Willadsen)
• Fix not being able to activate some change bar actions by temporarily disabling overlay scrolling support on GTK+ 3.14 (Kai Willadsen)
• Stop recreating duplicate recently-used file placeholders (Kai Willadsen)
• Fix out-of-date man page documentation (Kai Willadsen)
• Test fixes and testing improvements (Magnus Ihse Bursie)
• Documentation fixes (Anders Jonsson)