Introduce parsing tests and initial (noop) parsing
Fix runtests.sh little bug

I forgot to mkdir the build dir for the first time
Fix some parsetest errors
Fix some object_to_string bugs

Introduce object_to_stringtest
Implement boolean to string
Move stringfication-related code to to_string.cpp
Implement literal::block::to_string and block_stm::to_string
Complete to_string
Insert missing license headers
Initial tokenizer implementation
More elaborated test
Add THREADS parameter to tests script
Change ne symbol to avoid conflicts with the ! sign
Finalize tokenizer
Add $, @ and . for merging lines
Add constructor taking a long as an argument
Embryonic parser implementation
Make tokens less verbose
Make a barely working parser
Use testname instead of testnametest.cpp in the TESTS var