MathCAT 0.6.9 (Build for NVDA 2025.1)

Changes since last release

• Update manifest to indicate compatibility with 2025.1
• Fix unhandled exception when opening up a new user preference file
• Strip '_' and '-' from unmatched intent names (and literals). For example "my-function" should be "my function".
• Add rule for "x check" (inverted hat)
• Add rule for repeating decimals for 'en'. This only handles the line over the repeating part, not other notations.