Cl-sii

- (PR 138, 2020-09-15) config: Add PyPI package uploading to CI
- (PR 135, 2020-09-15) rtc: Add constants
- (PR 129, 2020-09-14) build(deps): bump toml from 0.10.0 to 0.10.1
- (PR 133, 2020-09-14) build(deps): bump codecov from 2.0.22 to 2.1.9
- (PR 134, 2020-09-10) Add sub-package `rtc`
- (PR 131, 2020-07-22) requirements: update 'signxml'
- (PR 123, 2020-07-13) build(deps): bump six from 1.14.0 to 1.15.0
- (PR 126, 2020-07-10) build(deps): bump virtualenv from 20.0.16 to 20.0.26
- (PR 127, 2020-07-09) config: Verify Python dependency compatibility in CI
- (PR 124, 2020-07-07) build(deps): bump tox from 3.14.6 to 3.16.1
- (PR 122, 2020-07-07) config: Add configuration for GitHub Dependabot

- (PR 119, 2020-06-08) Add support for Python 3.8

- (PR 116, 2020-04-14) rcv.data_models: remove unnecessary fields
- (PR 114, 2020-04-14) rcv.parse_csv: remove param `razon_social` from parse functions

- (PR 112, 2020-04-14) data_models: make some fields optional

- (PR 110, 2020-04-13) rcv.data_models: move some fields to subclasses
- (PR 109, 2020-04-13) rcv.parse_csv: move code from 'fd-cl-data' in here
- (PR 108, 2020-04-13) dte.data_models: add 'DteXmlData'
- (PR 107, 2020-04-10) requirements: several updates