Cannot directly set the tech state

[ttinies]

Given the current version of API, there isn't any option to directly set the tech state.

Reference issue in the API:
Blizzard/s2client-proto#117

As a workaround, this package attempts to initially create all of the requisite tech-producing structures (with fast/free production temporarily enabled) and research the selected upgrades. Doing so introduces a new issue #2, which also has its own limited workaround and limitations.