v0.34.0

This is a big release/set of changes! (see examples/ and more details below)

• extensibility, add any go function, used it for a lot of what follows:
• math functions (pow, trigonometry functions (sin,cos,tan,asin,acos,atan) etc)
• constants like PI and E
• floating point exponent (eg 1.2e-3), underscore number separator (eg 1_000_000)
• printf/printf
• variadic functions either go side and grol side using .. special last argument

What's Changed

• Added support for extensions, including usage and args check - use it to add math functions by @ldemailly in #96
• Variadic grol side by @ldemailly in #99
• handle exponent notation floats and _s by @ldemailly in #104
• ALL_CAPS are now constants. Changed/shared recursive function environment. Fixed bug with macro environment. Added pprof. by @ldemailly in #102

More mundane:

• STRING token in right section, DebugString() compact mode by @ldemailly in #100

Full Changelog: v0.33.1...v0.34.0

Changelog

• 6b4aac6 ALL_CAPS are now constants. Changed/shared recursive function environment. Fixed bug with macro environment. Added pprof. (#102)
• 4d9664f Added support for extensions, including usage and args check - use it to add math functions (#96)
• 0011c9e STRING token in right section, DebugString() compact mode (#100)
• e6fb1f8 Variadic grol side (#99)
• e5f18a8 handle exponent notation floats and _s (#104)