removed UB (reading potentially inactive union member)
Base of the tutorial
Merge pull request #13 from jcubic/tutorial-draft

added a basic tutorial
Merge branch 'master' of github.com:H2CO3/Sparkling
fixed grammar in tutorial; added more examples
this ordered list thingy doesn't work out
REPL can now run files as standalone scripts
added missing example in tutorial
tiny typo
added NaN and infinity constants
full support for global constants; small fixes
fixed typo, removed unused declaration
fixed a memory leak and an erroneous include
fixed yet another "realloc invalidates the stack pointer" bug
longjmp() the horrible
added documentation for spn_vm_callfunc()
improved enumeration methods for arrays
fixed obsolete comments; added Phi
disassembler now recognizes  "store global" instruction
fixed a multiple-free bug: local symtabs are supposed to contain owning pointers