Dev v3.1.1

[BennyThadikaran]

07a7479 (HEAD -> dev) Bump to version 3.1.1

c17d001

• Correction: replaced %USERPROFILE% with tilde ~ for Windows paths
• Minor formatting

1b3178a

• Remove checks for duplicates as no longer required
• Move assert statements outside while loop

• 4432cb7 Remove duplicate entries from dataframe before scanning patterns