Implement roll_monthday, simplify SemiMonthOffset#18762

Merged

jreback merged 19 commits intopandas-dev:masterfrom

jbrockmendel:qtr_ngt1

Dec 30, 2017

Commits on Dec 15, 2017

Merge branch 'master' of https://github.com/pandas-dev/pandas into qtr_ngt1
jbrockmendel
committed

Commits on Dec 16, 2017

Separate int and datetime roll funcs
jbrockmendel
committed

Commits on Dec 18, 2017

Merge branch 'master' of https://github.com/pandas-dev/pandas into qtr_ngt1
jbrockmendel
committed

Commits on Dec 24, 2017

Merge branch 'master' of https://github.com/pandas-dev/pandas into qtr_ngt1
jbrockmendel
committed

Commits on Dec 29, 2017