v0.2.6: Minor patch for deprecation warnings and license
This patch resolves some minor deprecation warnings relevant for sphinx 4.0+, and uses the correct license classifier as the license changed to Apache-2.0 in v0.2.5.
This patch resolves some minor deprecation warnings relevant for sphinx 4.0+, and uses the correct license classifier as the license changed to Apache-2.0 in v0.2.5.