Add option to escape uppercase letters

[norro]

Add option to escape uppercase letters, e.g., in the title field. Example:
{{Model-Based Safety Assessment with SysML and Component Fault Trees: Application and Lessons Learned}} -> {{{M}odel-{B}ased {S}afety {A}ssessment with {SysML} and {C}omponent {F}ault {T}rees: {A}pplication and {L}essons {L}earned}}

I.e.:

• Escape all upper-case letters at the beginning of words
• Escape all words with >1 upper-case letters

[FlamingTempura]

Great suggestion! I'll take a look when I find some time or I'd welcome a PR.