Modified fonts for e-reading

The following fonts were slightly modified for my e-reading enjoyment.

The fonts were all originally available under the OFL license.

I decided on the following fonts:

• Charis SIL (has become Charis eBook)
• Ibarra Real Nova (has become Ibarra eBook)
• Gelasio (has become Gelasio eBook)
• Yrsa (has become Yrsa eBook)
• Newsreader (has become Newsreader eBook)
• Literata (has become Literata eBook)

The copyright disclaimers and such have not been modified, only some of the metrics and font family name information is different.