BibEdit: improvements for master

2: I102 copyright year is outdated, expected 2014 but got 2011
46:1: E302 expected 2 blank lines, found 1
54:1: E302 expected 2 blank lines, found 1
54: D200 One-line docstring should not occupy 3 lines
62:1: E302 expected 2 blank lines, found 1
62: D200 One-line docstring should not occupy 3 lines
70:1: E302 expected 2 blank lines, found 1
70: D205 Blank line missing between one-line summary and description
70: D208 Docstring is over-indented
79:1: E302 expected 2 blank lines, found 1
88:1: E302 expected 2 blank lines, found 1
93:1: E302 expected 2 blank lines, found 1
93: D400 First line should end with '.', not 'd'
93: D205 Blank line missing between one-line summary and description
93: D208 Docstring is over-indented
101:1: E302 expected 2 blank lines, found 1
101: D400 First line should end with '.', not 'e'
101: D200 One-line docstring should not occupy 3 lines
116:1: E302 expected 2 blank lines, found 1
116: D400 First line should end with '.', not 'r'
116: D200 One-line docstring should not occupy 3 lines
123:1: E302 expected 2 blank lines, found 1
123: D400 First line should end with '.', not 'd'
123: D200 One-line docstring should not occupy 3 lines
130:1: E302 expected 2 blank lines, found 1
130: D401 First line should be imperative: 'Return', not 'Returns'
130: D400 First line should end with '.', not 'n'
130: D200 One-line docstring should not occupy 3 lines
171: D400 First line should end with '.', not 'e'
171: D205 Blank line missing between one-line summary and description
179:1: E302 expected 2 blank lines, found 1
186:1: E302 expected 2 blank lines, found 1
186: D103 Docstring missing
193:1: E302 expected 2 blank lines, found 1
193: D103 Docstring missing
199:1: E302 expected 2 blank lines, found 1
199: D103 Docstring missing
203:1: E302 expected 2 blank lines, found 1
203: D400 First line should end with '.', not 's'
203: D205 Blank line missing between one-line summary and description