v0.10.0

ImageCore v0.10.0

Diff since v0.9.4

Merged pull requests:

• Restrict clamp01 to gray & RGB (#181) (@timholy)
• test: Julia 1.8 Compat (#184) (@johnnychen94)
• chore: remove Graphics dependency (#185) (@johnnychen94)
• Switch to SnoopPrecompile (#189) (@timholy)
• Use error-hint for fft-related errors (#190) (@timholy)
• Make type aliases constant (#191) (@eliascarv)
• Require CVS 0.10 (#192) (@timholy)
• Switch to PrecompileTools (#193) (@timholy)