Merge pull request #1584 from daschw/julia0.7

julia 0.7 fixes

REQUIRE

@@ -14,3 +14,4 @@ NaNMath
 Requires
 Contour
 GR 0.31.0
+Dates

src/Plots.jl

@@ -6,6 +6,7 @@ using Reexport
 
 import StaticArrays
 using StaticArrays.FixedSizeArrays
+using Dates
 
 @reexport using RecipesBase
 import RecipesBase: plot, plot!, animate

src/backends/hdf5.jl

@@ -413,15 +413,15 @@ function _hdf5plot_gwrite(grp, k::String, v::Surface)
 	_hdf5plot_gwrite(grp, "data2d", v.surf)
 	_hdf5plot_writetype(grp, Surface)
 end
-#TODO: "Properly" support Nullable using _hdf5plot_writetype?
+# #TODO: "Properly" support Nullable using _hdf5plot_writetype?
-function _hdf5plot_gwrite(grp, k::String, v::Nullable)
+# function _hdf5plot_gwrite(grp, k::String, v::Nullable)
-    if isnull(v)
+#     if isnull(v)
-        _hdf5plot_gwrite(grp, k, nothing)
+#         _hdf5plot_gwrite(grp, k, nothing)
-    else
+#     else
-        _hdf5plot_gwrite(grp, k, v.value)
+#         _hdf5plot_gwrite(grp, k, v.value)
-    end
+#     end
-    return
+#     return
-end
+# end
 
 function _hdf5plot_gwrite(grp, k::String, v::SeriesAnnotations)
     #Currently no support for SeriesAnnotations

src/components.jl

@@ -438,16 +438,16 @@ end
 mutable struct SeriesAnnotations
     strs::AbstractVector  # the labels/names
     font::Font
-    baseshape::Nullable
+    baseshape::Union{Shape, AbstractVector{Shape}, Nothing}
     scalefactor::Tuple
 end
 function series_annotations(strs::AbstractVector, args...)
     fnt = font()
-    shp = Nullable{Any}()
+    shp = nothing
     scalefactor = (1,1)
     for arg in args
         if isa(arg, Shape) || (isa(arg, AbstractVector) && eltype(arg) == Shape)
-            shp = Nullable(arg)
+            shp = arg
         elseif isa(arg, Font)
             fnt = arg
         elseif isa(arg, Symbol) && haskey(_shapes, arg)

src/plot.jl

@@ -1,10 +1,10 @@
 
 mutable struct CurrentPlot
-    nullableplot::Nullable{AbstractPlot}
+    nullableplot::Union{AbstractPlot, Nothing}
 end
-const CURRENT_PLOT = CurrentPlot(Nullable{AbstractPlot}())
+const CURRENT_PLOT = CurrentPlot(nothing)
 
-isplotnull() = isnull(CURRENT_PLOT.nullableplot)
+isplotnull() = CURRENT_PLOT.nullableplot == nothing
 
 """
     current()
@@ -16,7 +16,7 @@ function current()
     end
     get(CURRENT_PLOT.nullableplot)
 end
-current(plot::AbstractPlot) = (CURRENT_PLOT.nullableplot = Nullable(plot))
+current(plot::AbstractPlot) = (CURRENT_PLOT.nullableplot = plot)
 
 # ---------------------------------------------------------