support for reasoning summaries and web search in o3, o4-mini

upgrade openai

add o3 and o4-mini pricing

bump version to 0.4.3

upgrade google genai lib (#114)

bump version to 0.4.2

gpt-4.1 pricing

bump version to 0.4.1

add o1-pro, o1, and o3-mini model pricing with /, /, and .1/.4 per 1M tokens

add o1-pro model pricing with / per 1M tokens

add gpt-4.5 model pricing with $75/$150 per 1M tokens

Update README.md (#112)

bump version to 0.4.0

Claude 3.7 Sonnet with thinking

bump version to 0.3.2