It's over

Merge #136

136: [WIP] libFirm method body code generation r=flip1995,reiner-dolp,problame a=joshuabach

cc #117 

Closes #123 

~Based on #134, that should be merged before this.~

This can allegedly generate all control-flow structures ~(execpt `while`)~. The if-diamond seems to be generated correctly, variable declaration (of ints) and initial assignments also look fine. 

~Expression handling is very limited. Currently only supported are integer literals and local variable / parameter references. This is currently blocked on getting type information from @hediet.~

# TODO
- [x] `this` parameter
- [x] `while`
- [x] Expressions

Co-authored-by: Joshua Bachmeier <joshua@bachmeier.cc>
Co-authored-by: Christian Schwarz <me@cschwarz.com>
Co-authored-by: flip1995 <hello@philkrones.com>
Co-authored-by: Reiner Dolp <reiner-dolp@users.noreply.github.com>

Merge #113

113: semantics: add a few binop tests r=flip1995 a=problame

ref #68 

@flip1995 , is #68 sufficiently covered?

Co-authored-by: Christian Schwarz <me@cschwarz.com>

Merge #61

61: Add empty AST test cases r=flip1995 a=flip1995



Co-authored-by: flip1995 <hello@philkrones.com>

Merge #37

37: mjtest crate: procedural macros for re-using mjtest cases as cargo tests r=reiner-dolp a=problame



Co-authored-by: Christian Schwarz <me@cschwarz.com>

Merge #15

15: Add mjtest to CI r=flip1995 a=flip1995

Temporally `allow_failures` on mjtest, since this PR is based on `master`, not on `lexer`. Should be removed in #12, after rebasing it on this PR/on `master`

Co-authored-by: flip1995 <hello@philkrones.com>