diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e29399a..f5ae947 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,8 +10,8 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - "1.3"
-          - "1.5"
+          - "1.6"
+          - "1.7"
           - "nightly"
         os:
           - ubuntu-latest
diff --git a/Manifest.toml b/Manifest.toml
deleted file mode 100644
index 2d0d10a..0000000
--- a/Manifest.toml
+++ /dev/null
@@ -1,75 +0,0 @@
-# This file is machine-generated - editing it directly is not advised
-
-[[Artifacts]]
-deps = ["Pkg"]
-git-tree-sha1 = "c30985d8821e0cd73870b17b0ed0ce6dc44cb744"
-uuid = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
-version = "1.3.0"
-
-[[Base64]]
-uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
-
-[[Dates]]
-deps = ["Printf"]
-uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
-
-[[InteractiveUtils]]
-deps = ["Markdown"]
-uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
-
-[[JLLWrappers]]
-git-tree-sha1 = "a431f5f2ca3f4feef3bd7a5e94b8b8d4f2f647a0"
-uuid = "692b3bcd-3c85-4b1f-b108-f13ce0eb3210"
-version = "1.2.0"
-
-[[LibGit2]]
-deps = ["Printf"]
-uuid = "76f85450-5226-5b5a-8eaa-529ad045b433"
-
-[[Libdl]]
-uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
-
-[[Logging]]
-uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
-
-[[Markdown]]
-deps = ["Base64"]
-uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
-
-[[Pkg]]
-deps = ["Dates", "LibGit2", "Libdl", "Logging", "Markdown", "Printf", "REPL", "Random", "SHA", "UUIDs"]
-uuid = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
-
-[[Printf]]
-deps = ["Unicode"]
-uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
-
-[[REPL]]
-deps = ["InteractiveUtils", "Markdown", "Sockets"]
-uuid = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
-
-[[Random]]
-deps = ["Serialization"]
-uuid = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
-
-[[SHA]]
-uuid = "ea8e919c-243c-51af-8825-aaa63cd721ce"
-
-[[Serialization]]
-uuid = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
-
-[[Sockets]]
-uuid = "6462fe0b-24de-5631-8697-dd941f90decc"
-
-[[UUIDs]]
-deps = ["Random", "SHA"]
-uuid = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
-
-[[Unicode]]
-uuid = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
-
-[[startin_jll]]
-deps = ["Artifacts", "JLLWrappers", "Libdl", "Pkg"]
-git-tree-sha1 = "76ff5d74b8b3e7006c8d92af60616d88488b12f6"
-uuid = "c0017dae-bb0d-5ae0-bc81-a2950b9c605d"
-version = "0.4.9+0"
diff --git a/Project.toml b/Project.toml
index cec2817..509ccf7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,14 +1,15 @@
 name = "StarTIN"
 uuid = "152385ed-0447-47b3-b417-bbbf3d580ece"
 authors = ["Maarten Pronk <git@evetion.nl> and contributors"]
-version = "0.1.0"
+version = "0.1.1"
 
 [deps]
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
 startin_jll = "c0017dae-bb0d-5ae0-bc81-a2950b9c605d"
 
 [compat]
-julia = "1.3"
+julia = "1.6"
+startin_jll = "0.5.3"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/src/StarTIN.jl b/src/StarTIN.jl
index 18b4abc..c526836 100644
--- a/src/StarTIN.jl
+++ b/src/StarTIN.jl
@@ -1,6 +1,8 @@
 module StarTIN
 using Libdl
 using startin_jll
+# libstartin = joinpath(pwd(), "../startin/target/release/libstartin.dylib")
+
 
 struct Star
     pt::Vector{Float64} # length 3
@@ -29,23 +31,47 @@ end
 
 
 function Base.insert!(t::DT, points::Matrix{Float64})
-    w, h = size(points)
+    w, _ = size(points)
     w == 3 || error("Point array should be 3 dimensional, got $w dimensions.")
     res = ccall((:insert, libstartin), Cint, (Ptr{Triangulation}, Cint, Ref{Cdouble}), t.ptr, length(points), points)
     res == 0 || @warn "$res duplicate points encountered."
     res
 end
 
+function Base.insert!(t::DT, point::Vector{Float64})
+    w = length(point)
+    w == 3 || error("Point array should be 3 dimensional, got $w dimensions.")
+    res = ccall((:insert_one_pt, libstartin), Cint, (Ptr{Triangulation}, Cdouble, Cdouble, Cdouble), t.ptr, point[1], point[2], point[3])
+    res == 0 || @warn "Error inserting point."
+    res
+end
+
+function Base.delete!(t::DT, pointid)
+    res = ccall((:remove, libstartin), Cint, (Ptr{Triangulation}, Cint), t.ptr, pointid)
+    res == 0 || @warn "$res duplicate points encountered."
+    res
+end
+
 function info(t::DT)
     ccall((:debug, libstartin), Cint, (Ptr{Triangulation},), t.ptr)
 end
 
+function get_snap_tolerance(t::DT)
+    ccall((:get_snap_tolerance, libstartin), Cdouble, (Ptr{Triangulation},), t.ptr)
+end
+function set_snap_tolerance!(t::DT, tol::Float64)
+    ccall((:set_snap_tolerance, libstartin), Cdouble, (Ptr{Triangulation}, Cdouble), t.ptr, tol)
+end
+
 function interpolate_nn(t::DT, x::Float64, y::Float64)
     ccall((:interpolate_nn, libstartin), Cdouble, (Ptr{Triangulation}, Cdouble, Cdouble), t.ptr, x, y)
 end
 function interpolate_linear(t::DT, x::Float64, y::Float64)
     ccall((:interpolate_linear, libstartin), Cdouble, (Ptr{Triangulation}, Cdouble, Cdouble), t.ptr, x, y)
 end
+function interpolate_nni(t::DT, x::Float64, y::Float64)
+    ccall((:interpolate_nni, libstartin), Cdouble, (Ptr{Triangulation}, Cdouble, Cdouble), t.ptr, x, y)
+end
 function interpolate_laplace(t::DT, x::Float64, y::Float64)
     ccall((:interpolate_laplace, libstartin), Cdouble, (Ptr{Triangulation}, Cdouble, Cdouble), t.ptr, x, y)
 end
@@ -60,10 +86,12 @@ function destroy!(t::DT)
 end
 
 export DT
-export insert!
 export interpolate_nn
+export interpolate_nni
 export interpolate_linear
 export interpolate_laplace
+export get_snap_tolerance
+export set_snap_tolerance!
 export write!
 export destroy!
 export info
diff --git a/test/runtests.jl b/test/runtests.jl
index 380386e..6c02ebd 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,14 +5,31 @@ using Test
     using StarTIN
 
     t = DT()
+
+    # Insert multiple points
     points = rand(0.0:0.01:100.0, 3, Int(1e5))
     @test @time insert!(t, points) > 0
 
+    # Insert single point
+    @test @time insert!(t, [50.0, 50.0, 50.0]) > 0
+
+    # Insert invalid points
     points = rand(4, 100)
     @test_throws Exception insert!(t, points)
+    @test_throws Exception insert!(t, [1.0, 2.0])
+
+    # Test removal
+    pid = insert!(t, [51.0, 51.0, 50.0])
+    @test delete!(t, pid) == 0
+
+    # Test tolerance
+    @test get_snap_tolerance(t) == 0.001
+    @test set_snap_tolerance!(t, 0.00001) == 0.00001
 
+    # Test interpolation
     @test !isnan(interpolate_linear(t, 0.5, 0.5))
     @test !isnan(interpolate_nn(t, 0.5, 0.5))
+    @test !isnan(interpolate_nni(t, 0.5, 0.5))
     @test !isnan(interpolate_laplace(t, 0.5, 0.5))
 
     fn = "test.obj"