Remove ApproxFun compat from docs (#920)

* Remove ApproxFun compat from docs

* Domainsets v0.7

* Update docs for domain and bandwidth; use BandedMatrices v1

Author: jishnub

docs/Project.toml

@@ -9,10 +9,9 @@ Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 
 [compat]
-ApproxFun = "0.13"
-BandedMatrices = "0.17"
+BandedMatrices = "0.17, 1"
 Documenter = "1"
-DomainSets = "0.6"
+DomainSets = "0.6, 0.7"
 Literate = "2"
 Plots = "1"
 SpecialFunctions = "2"

docs/src/library.md

@@ -159,7 +159,7 @@ zeros(::Space)
 ## Accessing information about a Fun
 
 ```@docs
-domain
+ApproxFun.domain
 ```
 
 ```@docs
@@ -222,7 +222,7 @@ Operator
 ```
 
 ```@docs
-BandedMatrices.bandwidths(::Operator)
+bandwidths(::Operator)
 ```
 
 ```@docs