add --ignore-classes and --ignore-functions

[jameslamb]

fixes #43

fix #44

[pep8speaks]

Hello @jameslamb! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file doppel/cli.py:

Line 6:3: E225 missing whitespace around operator Line 6:5: E225 missing whitespace around operator Line 6:7: E225 missing whitespace around operator Line 63:5: E231 missing whitespace after ':' Line 64:9: E113 unexpected indentation Line 65:5: E231 missing whitespace after ';' Line 65:5: E702 multiple statements on one line (semicolon) Line 66:9: E113 unexpected indentation

• In the file doppel/describe.py:

Line 35:1: E122 continuation line missing indentation or outdented Line 35:3: E225 missing whitespace around operator Line 35:5: E227 missing whitespace around bitwise or shift operator Line 52:1: E122 continuation line missing indentation or outdented Line 52:1: W503 line break before binary operator Line 52:3: E225 missing whitespace around operator Line 52:5: E225 missing whitespace around operator Line 52:8: E251 unexpected spaces around keyword / parameter equals Line 54:1: E122 continuation line missing indentation or outdented Line 54:1: W503 line break before binary operator Line 54:3: E225 missing whitespace around operator Line 54:7: E225 missing whitespace around operator Line 115:1: E305 expected 2 blank lines after class or function definition, found 1 Line 115:3: E227 missing whitespace around bitwise or shift operator Line 115:7: E225 missing whitespace around operator Line 116:5: E113 unexpected indentation Line 119:1: E122 continuation line missing indentation or outdented Line 119:1: W503 line break before binary operator Line 119:3: E225 missing whitespace around operator Line 119:5: E225 missing whitespace around operator Line 119:8: E251 unexpected spaces around keyword / parameter equals Line 124:1: E122 continuation line missing indentation or outdented Line 124:1: W503 line break before binary operator Line 124:3: E225 missing whitespace around operator Line 124:7: E225 missing whitespace around operator Line 128:5: E122 continuation line missing indentation or outdented Line 131:5: E122 continuation line missing indentation or outdented

[jameslamb]

I might come back to this in the future, but closing for now