Adapt/Use new aoe2.net API functionality

[sixP-NaraKa]

The aoe2.net site has been up for some time now again. Many changes to the required usage of their API have been made. See their API documentation below.

https://aoe2.net/#api https://aoe2.net/#nightbot

This issue is to log and implement the needed changes.

With this said, I might decide to additionally do some "mapping" of the returned responses into more user-friendly Python objects, so accessing the results is not as cumbersome as response['...'] or response.get('...') everytime. So something like this:

# Request: https://aoe2.net/api/leaderboard?game=aoe2de&leaderboard_id=3&start=1&count=10
leaderboard: Leaderboard = api.get_leaderboard(game="aoe2de", leaderboard_id=3, start=1, count=10)
print(leaderboard)
>> "Leaderboard<total = 43055, leaderboard_id = 3, start = 1, count = 10, players = [...]>"

for player in leaderboard.players  # list of players that were found
    name = player.name
    rank = player.rank
    .... = player.XXX  # etc.

[sixP-NaraKa]

Note: once done, a new version will be released. This version will be v2.0.0 (due to the breaking changes that need to be implemented).

[sixP-NaraKa]

Changes implemented in branch ISSUE-3, see commit 80320eb / 03e48e9.

Due to now mapping the API properties with dataclasses and the help of the library dataclasses-json, the Python version requirement is now 3.7+.

Will test the changes in versions 3.7+. If all looks good I'll edit the documentation and changelog, afterwards I'll merge and create the new releases.

[sixP-NaraKa]

Tested yesterday, looks good on 3.7+.

Updated the docs and changelog. Releasing the version v2.0.0 in a few.

[sixP-NaraKa]

New release available (PyPi and GitHub).