v2.1.0

• 🆙 bump dependencies
• 📜 update README
• 🧹 replace interface{} with any
• 🔨 add matrix strategy & dependencies to github workflows
• 💪 improve TestConcurrent()
• 🧪 set maxMaxGor = min(4, NumCPU)
• 🧪 overhaul tests, switch to jfcg/rng
• 📜 update README
• switch from median-of-2n to median-of-2n-1 for floats
• add NaNoption (can be NaNsmall, NaNignore, NaNlarge)
• 🔧 tune parameters
• 🔍 add workflow for parameter tuning
• 🔍 add max MaxGor to help tuning parameters
• 🔧 improve parameter tuning
• ⚡ add go:nosplit
• #️⃣ make goroutine counter 64-bit
• 2️⃣ partTwo*() returns single index
• ⚡ inline pivot*() in short*() part 2
• ⚡ inline pivot*() in short*()
• ⚡ add minMaxFour()
• 🧪 add test for minMaxSample()
• 🐛 fix lesswap pivot()
• ⚡ improve partition*()
• ⚡ improve insertion*()
• ⚡ improve pivot*(), remove presort*()
• 🆙 bump dependencies
• 📜 updates docs
• ⚙️ improve workflows

Full Changelog: v2.0.9...v2.1.0