added AST
Merge pull request #1 from ladagagina/master

added AST
added AST to the other branch
Updated AST
Merge pull request #2 from ladagagina/Lada-branch

Lada branch
merge Lada commit
fields&members
Merge branch 'master' of https://github.com/mbryksin/projectJANE
solution init
New AVL
Delete ExpressionPrimitive.fs
Update AST.fsproj
Update
Update AST
Added expression
Update Statement.fs
Merge pull request #3 from Lozov-Petr/master

New AST structure
Fix some mistakces
Add example of tree
Merge pull request #4 from Lozov-Petr/master

Small mistakes correction