Rio-tiler-pds

* update for rio-tiler==2.0.0rc
* internal refactor of the Landsat8 reader
* add `sentinel.aws.sentinel2.S2JP2Reader` and `aws.sentinel2.S2COGReader` proxies to readers.

python
from rio_tiler_pds.sentinel.aws import S2COGReader, S2JP2Reader

with S2JP2Reader("S2A_L2A_20170729_19UDP_0") as scene:
print(type(scene))
>>> <class 'rio_tiler_pds.sentinel.aws.sentinel2.S2L2AReader'>

with S2JP2Reader("S2A_L1C_20170729_19UDP_0") as scene:
print(type(scene))
>>> <class 'rio_tiler_pds.sentinel.aws.sentinel2.S2L1CReader'>


with S2COGReader("S2A_29RKH_20200219_0_L2A") as scene:
print(type(scene))
>>> <class 'rio_tiler_pds.sentinel.aws.sentinel2.S2L2ACOGReader'>

* add `TMS` options to adapt for rio-tiler 2.0.0b17 (ref: https://github.com/cogeotiff/rio-tiler/pull/285)

* remove `pkg_resources` (https://github.com/pypa/setuptools/issues/510)

* Update sentinel2-cogs image path (https://github.com/cogeotiff/rio-tiler-pds/pull/22).
* Remove ContextManager requirement in base class and update for rio-tiler 2.0b13 (https://github.com/cogeotiff/rio-tiler/pull/265).
* Add MODIS (PDS and Astraea) dataset (https://github.com/cogeotiff/rio-tiler-pds/issues/18)
* move reader base classes to rio-tiler (https://github.com/cogeotiff/rio-tiler-pds/issues/24)
* add missing `0` (e.g "B1" -> "B01") when user forget it on sentinel and modis band names (https://github.com/cogeotiff/rio-tiler-pds/issues/25)

* add support for CBERS-4A (author fredliporace)

* Revert the use of `assets` options to `bands` (12)

python
from rio_tiler_pds.landsat.aws import L8Reader

with L8Reader("LC08_L1TP_016037_20170813_20170814_01_RT") as landsat:
in 0.1.1 (PAST)
tile, data = landsat.tile(x, y, z, assets="B1")

in 0.2.0 (NOW)
tile, data = landsat.tile(x, y, z, bands="B1")