Merge pull request #46 from abrudz/master

Fix ⌋⌊, add []

README.md

@@ -11,7 +11,7 @@ Kalker (or "kalk") is a calculator program/website that supports user-defined va
 ## Features
 
 * Operators: +, -, \*, /, !
-* Groups: (), ⌈⌉, ⌋⌊
+* Groups: (), ⌈⌉, ⌊⌋, []
 * [Pre-defined functions and constants](https://github.com/PaddiM8/kalker/blob/master/kalk/src/prelude.rs)
 * User-defined functions and variables. `f(x, y) = xy`, `x = 5`
 * Derivative of functions (derivatives of noisy functions or of higher order can be a bit inaccurate). `f'(2)`, `sin'(-pi)`

cli/help.txt

@@ -1,6 +1,6 @@
 Overview of features
     Operators: +, -, *, /, !, %
-    Groups: (), ⌈⌉, ⌋⌊
+    Groups: (), ⌈⌉, ⌊⌋, []
     Pre-defined functions and constants
     User-defined functions and variables
     User-defined units (experimental and limited)

kalk/README.md

@@ -10,7 +10,7 @@ f(a, 2)
 
 ## Features
 * Operators: +, -, \*, /, !
-* Groups: (), ⌈⌉, ⌋⌊
+* Groups: (), ⌈⌉, ⌊⌋, []
 * [Pre-defined functions and constants](https://github.com/PaddiM8/kalk/blob/master/kalk/src/prelude.rs)
 * User-defined functions and variables. `f(x, y) = xy`, `x = 5`
 * Understands fairly ambiguous syntax. Eg. `2sin50 + 2xy`