diff --git a/Cargo.lock b/Cargo.lock
index bcf078a7..a1019df6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,11 +20,11 @@ dependencies = [
 
 [[package]]
 name = "atty"
-version = "0.2.11"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "hermit-abi 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.77 (registry+https://github.com/rust-lang/crates.io-index)",
- "termion 1.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -84,7 +84,7 @@ version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -340,11 +340,6 @@ dependencies = [
  "libc 0.2.77 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "numtoa"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "oxipng"
 version = "3.0.1"
@@ -402,19 +397,6 @@ dependencies = [
  "num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.1.57"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "redox_termios"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "redox_syscall 0.1.57 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rgb"
 version = "0.8.25"
@@ -454,7 +436,7 @@ name = "stderrlog"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -474,17 +456,6 @@ dependencies = [
  "winapi-util 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "termion"
-version = "1.5.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.77 (registry+https://github.com/rust-lang/crates.io-index)",
- "numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "textwrap"
 version = "0.11.0"
@@ -581,7 +552,7 @@ dependencies = [
 "checksum adler 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
 "checksum adler32 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
+"checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum autocfg 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 "checksum bit-vec 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5f0dc55f2d8a1a85650ac47858bb001b4c0dd73d79e3c455a842925e68d29cd3"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
@@ -622,12 +593,9 @@ dependencies = [
 "checksum num-rational 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a5b4d7360f362cfb50dde8143501e6940b22f644be75a4cc90b2d81968908138"
 "checksum num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)" = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
 "checksum num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
-"checksum numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
 "checksum png 0.16.7 (registry+https://github.com/rust-lang/crates.io-index)" = "dfe7f9f1c730833200b134370e1d5098964231af8450bce9b78ee3ab5278b970"
 "checksum rayon 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cfd016f0c045ad38b5251be2c9c0ab806917f82da4d36b2a327e5166adad9270"
 "checksum rayon-core 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "91739a34c4355b5434ce54c9086c5895604a9c278586d1f1aa95e04f66b525a0"
-"checksum redox_syscall 0.1.57 (registry+https://github.com/rust-lang/crates.io-index)" = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
-"checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum rgb 0.8.25 (registry+https://github.com/rust-lang/crates.io-index)" = "287f3c3f8236abb92d8b7e36797f19159df4b58f0a658cc3fb6dd3004b1f3bd3"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
@@ -636,7 +604,6 @@ dependencies = [
 "checksum stderrlog 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b02f316286ae558d83acc93dd81eaba096e746987a7961d4a9ae026842bae67f"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum termcolor 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb6bfa289a4d7c5766392812c0a1f4c1ba45afa1ad47803c11e1f407d846d75f"
-"checksum termion 1.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "c22cec9d8978d906be5ac94bceb5a010d885c626c4c8855721a4dbd20e3ac905"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
 "checksum time 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)" = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"