chore: Configure Renovate

See merge request !34

Update NIC to 2023

See merge request !33

Update with 2023 salaries

See merge request !32

Added Salary Scales for 2022

See merge request !31

Add NIC salary thresholds for 21/22 & 22/23 tax year

See merge request !30

Also updated the "Lower earnings limit" for 2020 as it looked wrong

Resolves "Implement changes from 2021 salary negotiations"

Closes #27

See merge request !29

https://www.hr.admin.cam.ac.uk/files/weekly_and_hourly_rates_grades_1_to_8_2021.xlsx

Use python3.7 as 3.6 image will stop being built nightly and will therefore go stale.

See merge request !27

Update salary scales for 2020

Closes #23

See merge request !26

Update salary scales as per https://www.admin.cam.ac.uk/reporter/2019-20/weekly/6588/section1.shtml#heading2-1

add NIC salary thresholds for 2020/21 tax year

Closes #22

See merge request !25

Update tests with new tables and extend example of costing so that it
spans a tax year which requires approximate tables.

Closes #22

Raising StopIteration directly from a generator is poor form. Explicitly
return an empty value if required.

Implemented calculate_commitment_from_date() tool

See merge request !24

expenditure from commitment. This requires a set of bank holidays which is retrieved using
retrieve_bank_holidays().

implement new pay scales from 1st August 2019

Closes #21

See merge request !23

Add pay scale tables for August 2019 and update parsesalarytable.py to
match the latest HR spreadsheet.

Closes #21

Update README to indicate how to release a new version

Closes #20

See merge request !22

add new USS rates

Closes #18

See merge request !21

Bump the version number to reflect the new features.

Instead of using load(), use safE_load() which disables some YAML
features around object instantiation which we don't need for static data
files.

add GitLab CI configuration

See merge request !20