abstract_essentials>=0.0.0.28

[all]
pdfplumber
pytesseract
pdf2image
xlrd
pyxlsb
dbfread
pyarrow

[dbf]
dbfread

[ocr]
pytesseract
pdf2image

[parquet]
pyarrow

[pdf]
pdfplumber

[xls]
xlrd

[xlsb]
pyxlsb
