Add inverse function and inverse-font constant
Use doseq to write invidivual values, rather than combining them into a single large string
Fix invalid redefinition of italic-font
Fix some formatting issues when writing seqs of values
Add additional bold variations
Reduce the width of the formatted exception

 - No longer display the mangled Java name for Clojure frames
 - Differentiate Clojure and Java frames via color and style
 - Select colors which look reasonable in common color settings for iTerm, Terminal, and IntelliJ Darcula
Update comments to reflect new constants defined
Update README for recent changes