Frequency enums in `dbapi.py` do not match documentation

[charliehouston]

Issue:
The frequency enums in the Python API file dbapi.py do not match the enums documented in dataBuffet-api-userguide.md. Testing confirms that the Python file is incorrect.

Original:

class BasketFrequency(Enum):
    DEFAULT=0
    DAILY=8
    BUSINESS=9
    WSUN=16
    WMON=17
    WTUE=18
    WWED=19
    WTHU=20
    WFRI=21
    WSAT=22
    MONTHLY=129
    QTROCT=160
    QTRNOV=161
    QTRDEC=162
    QUARTERLY=162
    ANNJAN=192
    ANNFEB=193
    ANNMAR=194
    ANNAPR=195
    ANNMAY=196
    ANNJUN=197
    ANNJUL=198
    ANNAUG=199
    ANNSEP=200
    ANNOCT=201
    ANNNOV=202
    ANNDEC=203
    ANNUAL=203

Documentation table:

Value	Name
0	Default
16	INDEX
49	Daily
50	Business daily (Mon- Fri)
65	Weekly ending on Sunday
66	Weekly ending on Monday
67	Weekly ending on Tuesday
68	Weekly ending on Wednesday
69	Weekly ending on Thursday
70	Weekly ending on Friday
71	Weekly ending on Saturday
80	3 Times a month 10th, 20th and end of month
97	Bi-Weekly, ending on alternating Sunday starting January, 27th 1850. E.g. Jan 27 1850, Feb 10 1850, ... ,Dec 31 2017, Jan 14 2018, Jan 28 2018
98	Bi-Weekly, ending on alternating Monday starting January, 14th 1850. E.g. Jan 14 1850, Jan 28 1850, ... ,Dec 18 2017, Jan 1 2018, Jan 15 2018
99	Bi-Weekly, ending on alternating Tuesday starting January, 15th 1850. E.g. Jan 15 1850, Jan 29 1850, ... ,Dec 19 2017, Jan 2 2018, Jan 16 2018
100	Bi-Weekly, ending on alternating Wednesday starting January, 16th 1850. E.g. Jan 16 1850, Jan 30 1850, ... ,Dec 20 2017, Jan 3 2018, Jan 17 2018
101	Bi-Weekly, ending on alternating Thursday starting January, 17th 1850. E.g. Jan 17 1850, Jan 31 1850, ... ,Dec 21 2017, Jan 4 2018, Jan 18 2018
102	Bi-Weekly, ending on alternating Friday starting January, 18th 1850. E.g. Jan 18 1850, Feb 1 1850, ... ,Dec 22 2017, Jan 5 2018, Jan 19 2018
103	Bi-Weekly, ending on alternating Saturday starting January, 19th 1850. E.g. Jan 19 1850, Feb 2 1850, ... ,Dec 23 2017, Jan 6 2018, Jan 20 2018
104	Bi-Weekly, ending on alternating Sunday starting January, 20th 1850. E.g. Jan 20 1850, Feb 3 1850, ... ,Dec 24 2017, Jan 7 2018, Jan 21 2018
105	Bi-Weekly, ending on alternating Monday starting January, 21st 1850. E.g. Jan 21 1850, Feb 4 1850, ... ,Dec 25 2017, Jan 8 2018, Jan 22 2018
106	Bi-Weekly, ending on alternating Tuesday starting January, 22nd 1850. E.g. Jan 22 1850, Feb 5 1850, ... ,Dec 26 2017, Jan 9 2018, Jan 23 2018
107	Bi-Weekly, ending on alternating Wednesday starting January, 23rd 1850. E.g. Jan 23 1850, Feb 6 1850, ... ,Dec 27 2017, Jan 10 2018, Jan 24 2018
108	Bi-Weekly, ending on alternating Thursday starting January, 24th 1850. E.g. Jan 24 1850, Feb 7 1850, ... ,Dec 28 2017, Jan 11 2018, Jan 25 2018
109	Bi-Weekly, ending on alternating Friday starting January, 25th 1850. E.g. Jan 25 1850, Feb 8 1850, ... ,Dec 29 2017, Jan 12 2018, Jan 26 2018
110	Bi-Weekly, ending on alternating Saturday starting January, 26th 1850. E.g. Jan 26 1850, Feb 9 1850, ... ,Dec 30 2017, Jan 13 2018, Jan 27 2018
112	Semi-Monthly, 15th and end of month
128	Monthly
155	Bi-Monthly, with year ending in November
156	Bi-Monthly, with year ending in December
170	Quarterly, with year ending in October
171	Quarterly, with year ending in November
172	Quarterly, with year ending in December
183	Semi-Annual, with year ending in July
184	Semi-Annual, with year ending in August
185	Semi-Annual, with year ending in September
186	Semi-Annual, with year ending in October
187	Semi-Annual, with year ending in November
188	Semi-Annual, with year ending in December
193	Annual, with year ending in January
194	Annual, with year ending in February
195	Annual, with year ending in March
196	Annual, with year ending in April
197	Annual, with year ending in May
198	Annual, with year ending in June
199	Annual, with year ending in July
200	Annual, with year ending in August
201	Annual, with year ending in September
202	Annual, with year ending in October
203	Annual, with year ending in November
204	Annual, with year ending in December