Upgrade support library to 28.0.0.

bramble-android/witness.gradle

 dependencyVerification {
     verify = [
+        'Android:Sdk:platforms:android.jar:d20853d289a5161d9cf1c1268d7923076487d4fa68c970b0733e2d5a0ccfc3c5',
         'cglib:cglib:3.2.0:cglib-3.2.0.jar:adb13bab79712ad6bdf1bd59f2a3918018a8016e722e8a357065afb9e6690861',
         'com.android.tools.analytics-library:protos:26.2.0:protos-26.2.0.jar:306784ac579be37f64f110204ea3fad8568e09e10817bb574bac0fc71b6402c5',
         'com.android.tools.analytics-library:shared:26.2.0:shared-26.2.0.jar:10782c593b7edcaf63cf79f7179c4652fee1c01298e0d81d888eea5ea1c320d4',

briar-android/build.gradle

@@ -90,7 +90,7 @@ dependencies {
 	implementation project(path: ':bramble-core', configuration: 'default')
 	implementation project(':bramble-android')
 
-	def supportVersion = '27.1.1'
+	def supportVersion = '28.0.0'
 	implementation "com.android.support:support-v4:$supportVersion"
 	implementation("com.android.support:appcompat-v7:$supportVersion") {
 		exclude module: 'support-v4'

briar-android/witness.gradle

 dependencyVerification {
     verify = [
-        'android.arch.core:common:1.1.0:common-1.1.0.jar:d34824b794bc92ff8f647a9bb13a7c73de920de5b47075b5d2c4f0770e9b8bfd',
-        'android.arch.core:runtime:1.1.0:runtime-1.1.0.aar:83400f7575bcfb8a2eeec64e05590f037bfaed1e56aa3a4214d20e55878445e3',
-        'android.arch.lifecycle:common:1.1.0:common-1.1.0.jar:614e31cfd33255dc4d5f5d8e62cfa6be2fbbc2a35643a79dc3ed008004c30807',
-        'android.arch.lifecycle:livedata-core:1.1.0:livedata-core-1.1.0.aar:14e57ff8ffb65a80c7e72d91f2076acccdaf2970f234c6261e03a6127eb5206b',
-        'android.arch.lifecycle:runtime:1.1.0:runtime-1.1.0.aar:094fd793924dd6a5136753e599ac8174a8147f4a401386b694ba7d818c223e2e',
-        'android.arch.lifecycle:viewmodel:1.1.0:viewmodel-1.1.0.aar:6407c93a5ea9850661dca42a0068d6f3deccefd7228ee69bae1c35d70cbc2557',
+        'Android:Sdk:platforms:android.jar:d20853d289a5161d9cf1c1268d7923076487d4fa68c970b0733e2d5a0ccfc3c5',
+        'android.arch.core:common:1.1.1:common-1.1.1.jar:3a616a32f433e9e23f556b38575c31b013613d3ae85206263b7625fe1f4c151a',
+        'android.arch.core:runtime:1.1.1:runtime-1.1.1.aar:c3215aa5873311b3f88a6f4e4a3c25ad89971bc127de8c3e1291c57f93a05c39',
+        'android.arch.lifecycle:common:1.1.1:common-1.1.1.jar:8d378e88ebd5189e09eef623414812c868fd90aa519d6160e2311fb8b81cff56',
+        'android.arch.lifecycle:livedata-core:1.1.1:livedata-core-1.1.1.aar:d6fdd8b985d6178d7ea2f16986a24e83f1bee936b74d43167c69e08d3cc12c50',
+        'android.arch.lifecycle:livedata:1.1.1:livedata-1.1.1.aar:50ab0490c1ff1a7cfb4e554032998b080888946d0dd424f39900efc4a1bcd750',
+        'android.arch.lifecycle:runtime:1.1.1:runtime-1.1.1.aar:c4e4be66c1b2f0abec593571454e1de14013f7e0f96bf2a9f212931a48cae550',
+        'android.arch.lifecycle:viewmodel:1.1.1:viewmodel-1.1.1.aar:7de29cfaba77d6b5d5be234c57f6812d0150d087e63941af22ba1d1f8e2bc96a',
         'backport-util-concurrent:backport-util-concurrent:3.1:backport-util-concurrent-3.1.jar:f5759b7fcdfc83a525a036deedcbd32e5b536b625ebc282426f16ca137eb5902',
         'cglib:cglib:3.2.0:cglib-3.2.0.jar:adb13bab79712ad6bdf1bd59f2a3918018a8016e722e8a357065afb9e6690861',
         'ch.acra:acra:4.9.1:acra-4.9.1.aar:d2762968c448757a7d6acc9f141881d9632f664988e9723ece33b5f7c79f3bc9',
@@ -21,22 +23,37 @@ dependencyVerification {
         'com.android.support.test:monitor:1.0.2:monitor-1.0.2.aar:38ef4fa98a32dc55550ff49bb36a583e178b3a9b830fcb8dcc27bfc4254bc2bc',
         'com.android.support.test:rules:1.0.2:rules-1.0.2.aar:7ddad387d1a16d4dbdbefacee070d34574e565b008117c1a163edac8ae02a6aa',
         'com.android.support.test:runner:1.0.2:runner-1.0.2.aar:f04b9ae342975ba1cb3e4a06e13426e3e6b8a73faa45acba604493d83c9a4f00',
-        'com.android.support:animated-vector-drawable:27.1.1:animated-vector-drawable-27.1.1.aar:59670473f6e98fda792f7bef25dd7292b0a3106031c7a5e30eb020bf26f077bd',
-        'com.android.support:appcompat-v7:27.1.1:appcompat-v7-27.1.1.aar:0c7808fbbc5838d831e32e3c0a6f84e1f2c981deb8f11e010650f2b57923a335',
-        'com.android.support:cardview-v7:27.1.1:cardview-v7-27.1.1.aar:8ed955dd037d82a7b4bbcaedb4f896523c3e4c1bf3ca698ce807c350767a2886',
-        'com.android.support:design:27.1.1:design-27.1.1.aar:7225973f7ee03765008a9c2f17a40b154c6885169fef022276e811c926a2202c',
-        'com.android.support:preference-v14:27.1.1:preference-v14-27.1.1.aar:dc058932e6fd93bf57d23fcc2f22351c21e5125e513721e4b0b03374341ad400',
-        'com.android.support:preference-v7:27.1.1:preference-v7-27.1.1.aar:a1798a826b4097d00e49280f412b21af08f9bf1179c2e3838dc339d9f843416d',
-        'com.android.support:recyclerview-v7:27.1.1:recyclerview-v7-27.1.1.aar:d735e4727878e99ef3980c10d15dc3468462fd509d4fb60cb8bd20b0f735085c',
-        'com.android.support:support-annotations:27.1.1:support-annotations-27.1.1.jar:3365960206c3d2b09e845f555e7f88f8effc8d2f00b369e66c4be384029299cf',
-        'com.android.support:support-compat:27.1.1:support-compat-27.1.1.aar:880ce01ff5be42b233ff8ec0c61cefb7dc3dc9500fea9e24423214813ac27ea2',
-        'com.android.support:support-core-ui:27.1.1:support-core-ui-27.1.1.aar:a3ae20e6d5dffba69ac97b99846d2738003af8563843d5f3c9dc4c35b4804241',
-        'com.android.support:support-core-utils:27.1.1:support-core-utils-27.1.1.aar:61036832c54e8701aae954fc3bf96d1d80bf8d9dd531bff77d72def456ba087a',
-        'com.android.support:support-fragment:27.1.1:support-fragment-27.1.1.aar:ec72d6ac36a1a0e6523bbddba33d73ffad070b9b3dd246cc44d8727a41ddb5e6',
-        'com.android.support:support-media-compat:27.1.1:support-media-compat-27.1.1.aar:55e9837dda88b74a8c812c63a78c63fd83c6c039a8c22d318492663a493585eb',
-        'com.android.support:support-v4:27.1.1:support-v4-27.1.1.aar:4f41dfc3e89f2738e45c86264a85c0934d055ee8ebe2020e23c97f303b80a48b',
-        'com.android.support:support-vector-drawable:27.1.1:support-vector-drawable-27.1.1.aar:1c0f421114cf4627cf208776d6eb4f76340c78b7e96fe6e12b3e6eb950caf1b9',
-        'com.android.support:transition:27.1.1:transition-27.1.1.aar:c0765b2f3c78696567ec5b3f519d22da1e3df11ac994625adf4bb4dc571caacc',
+        'com.android.support:animated-vector-drawable:28.0.0:animated-vector-drawable-28.0.0.aar:271ecbc906cda8dcd9e655ba0473129c3408a4189c806f616c378e6fd18fb3b7',
+        'com.android.support:appcompat-v7:28.0.0:appcompat-v7-28.0.0.aar:a3a8e5230359746ed91801579b5fbe4668e3b1c4e6a14c7d67c8f58cb0311752',
+        'com.android.support:asynclayoutinflater:28.0.0:asynclayoutinflater-28.0.0.aar:115bde87721f7334579b0c735f60dd7c98af1bb7f34010c5b0553b95dc351aa2',
+        'com.android.support:cardview-v7:28.0.0:cardview-v7-28.0.0.aar:bc9e6b0e06ce1205f1db34f0e6193019613d19cfeb54cdccea722340d1c60f26',
+        'com.android.support:collections:28.0.0:collections-28.0.0.jar:93c258c8a09f531a267653829742c0f8f6da0e348b11cb8655b0855628f2d4f0',
+        'com.android.support:coordinatorlayout:28.0.0:coordinatorlayout-28.0.0.aar:9dfacd80423dc979048fbaed83c0ee543c46259feb2417377e79a656888d3892',
+        'com.android.support:cursoradapter:28.0.0:cursoradapter-28.0.0.aar:87feffe742b8d62ca8a9833abe564838bf6a672e31c7ad1306ec4006adf90d21',
+        'com.android.support:customview:28.0.0:customview-28.0.0.aar:98db03845f994e08248bf701c1ff0ccaa12e70f94251ec9272900f0f694e072b',
+        'com.android.support:design:28.0.0:design-28.0.0.aar:7874ad1904eedc74aa41cffffb7f759d8990056f3bbbc9264911651c67c42f5f',
+        'com.android.support:documentfile:28.0.0:documentfile-28.0.0.aar:47cdcd3e9302b7b064923f05487a5c03babbd9bbda4726b71e97791fab5d4779',
+        'com.android.support:drawerlayout:28.0.0:drawerlayout-28.0.0.aar:8f6809afae4793550c37461c9810e954ae6a23dbb4d23e5333bf18148df1150a',
+        'com.android.support:interpolator:28.0.0:interpolator-28.0.0.aar:7bc7ee86a0db39a4b51956f3e89842d2bd962118d57d779eb6ed6b34ba0677ea',
+        'com.android.support:loader:28.0.0:loader-28.0.0.aar:920b85efd72dc33e915b0f88a883fe73b88483c6df8751a741e17611f2460341',
+        'com.android.support:localbroadcastmanager:28.0.0:localbroadcastmanager-28.0.0.aar:d287c823af5fdde72c099fcfc5f630efe9687af7a914343ae6fd92de32c8a806',
+        'com.android.support:preference-v14:28.0.0:preference-v14-28.0.0.aar:8133c6e19233fa51e036a341e6d3f4adeead3375cebf777efced0fe154c3267e',
+        'com.android.support:preference-v7:28.0.0:preference-v7-28.0.0.aar:75eabe936d1fc3b178450a554c4d433466036f2be6d6dccdf971eac9590fdbf5',
+        'com.android.support:print:28.0.0:print-28.0.0.aar:4be8a812d73e4a80e35b91ceae127def3f0bb9726bf3bc439aa0cc81503f5728',
+        'com.android.support:recyclerview-v7:28.0.0:recyclerview-v7-28.0.0.aar:eb296414c1f6d4c7b522f69fe50588ea85297855db0e7806c24eb4f75409587d',
+        'com.android.support:slidingpanelayout:28.0.0:slidingpanelayout-28.0.0.aar:d1d234f66a1b36a9aee9b94fa6c66f97128c0828078c8e889e9037ec898cd600',
+        'com.android.support:support-annotations:28.0.0:support-annotations-28.0.0.jar:5d5b9414f02d3fa0ee7526b8d5ddae0da67c8ecc8c4d63ffa6cf91488a93b927',
+        'com.android.support:support-compat:28.0.0:support-compat-28.0.0.aar:e17e3b01dbea3f9ea1c86943292f903ca93d2231c6242e456e0b6a9c5817118a',
+        'com.android.support:support-core-ui:28.0.0:support-core-ui-28.0.0.aar:bbc7f65fc95649464733af373361532ab5f9f3b749c3badaa2bbf27e574b6c6f',
+        'com.android.support:support-core-utils:28.0.0:support-core-utils-28.0.0.aar:c81e1e98ca3cb2edae002c69cf35b22aec364b8cb2f1042c97e206eb5790ac41',
+        'com.android.support:support-fragment:28.0.0:support-fragment-28.0.0.aar:3772fc738ada86824ba1a4b3f197c3dbd67b7ddcfe2c9db1de95ef2e3487a915',
+        'com.android.support:support-media-compat:28.0.0:support-media-compat-28.0.0.aar:266eff9605f515013eee1ebdbd8818a9270696dc807f34bbcc5fc11fb61a22c7',
+        'com.android.support:support-v4:28.0.0:support-v4-28.0.0.aar:8b9031381c678d628c9e47b566ae1d161e1c9710f7855c759beeac7596cecf30',
+        'com.android.support:support-vector-drawable:28.0.0:support-vector-drawable-28.0.0.aar:f658986d968172bccfed28578471c96050780fe5e133861e4d331069cc373f4d',
+        'com.android.support:swiperefreshlayout:28.0.0:swiperefreshlayout-28.0.0.aar:a3b41f7f6730866b49865e86e49f988d4858699765f534300fb2ff5f9325e712',
+        'com.android.support:transition:28.0.0:transition-28.0.0.aar:45d09fc51284c17bbab300f5122512ac7d7348a6d23bda2051648bbe76cc9aa5',
+        'com.android.support:versionedparcelable:28.0.0:versionedparcelable-28.0.0.aar:60eb1cb08f71b65c3f6123135e03ebeb5930b5e126e1e5b2ac91b386908c9d02',
+        'com.android.support:viewpager:28.0.0:viewpager-28.0.0.aar:013c4c53058758ec104dbae970be58159f75dfe342ba8b937d15ff5282e35ffc',
         'com.android.tools.analytics-library:protos:26.2.0:protos-26.2.0.jar:306784ac579be37f64f110204ea3fad8568e09e10817bb574bac0fc71b6402c5',
         'com.android.tools.analytics-library:shared:26.2.0:shared-26.2.0.jar:10782c593b7edcaf63cf79f7179c4652fee1c01298e0d81d888eea5ea1c320d4',
         'com.android.tools.analytics-library:tracker:26.2.0:tracker-26.2.0.jar:74e3cf587bcd6f5f14a6cddb8123c6940baf9947582f5356c25dd852c4726564',