PikachuHy's Scheme support Unicode now

we change the underlying std::string to icu UnicodeString.

thanks to @jingkaimori

see #8

PikachuHy's Scheme support Vau now

see: http://forum.texmacs.cn/t/run-vau-success-with-pscm/1480

That's one small step for TeXmacs, one giant leap for PikachuHy's Scheme (pscm).

Highlight:

• run Vau success
• support android and ios

PikachuHy's Scheme support R4RS now

Today I released pscm v0.2.0.

Highlight:

• almost support r4rs
• a new build system pscm-build

PikachuHy's Scheme is Here

I'm very happy to announce the first release of pscm.

Highlight:

• support continuation
• support wasm