more files
move data.json
REF/API: raise custom Errors in checker
ENH: add filter function
BUG: handle None months case
CLN: removing cruft;
update tests
CLN: fix dl_month
ENH: add merger frameork
TST: more tests for dlers
ENH: add regularze id
ENH: implement month to dd
API: riter -> rite, use to_hdf
update gitignore
LISC: Update liscense year
CLN: cleanup run code
add reader and riter
refactor dlers
CLN: cleanup dlers
temporarily skip troubling december