1.0.1-beta

When I updated 0.6.11 to 1.0.0, I replaced Vault.cachedRead() with Vault.read() in NonactiveNoteIO, following the review comment by the Obsidian team, without considering enough by myself, to be honest.

https://github.com/RyotaUshio/obsidian-math-booster/blob/ac37c91c92a857a2c91c2807c667a9c96016c746/src/file_io.ts#L109-L118

But it turned out this modification was unnecessary, and also might be the reason of some performance degration, so I pulled cachedRead back.

Also, a clear statement was added that recommends users for making their custom CSS snippets for theorem callouts instead of just using the preset styles.